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38401125515028 = 22331947479831253
BaseRepresentation
bin10001011101100111101010…
…11100011111111100010100
312000222010000110111121201000
420232303311130133330110
520013131001112440103
6213401122235103300
711042250455131413
oct1056636534377424
9160863013447630
1038401125515028
111126590a2687a1
12438248b2a1b30
1318572978b6b63
1496a8a548d47a
15468d7c35daa3
hex22ecf571ff14

38401125515028 has 192 divisors, whose sum is σ = 107251716096000. Its totient is φ = 11843864696448.

The previous prime is 38401125515023. The next prime is 38401125515041. The reversal of 38401125515028 is 82051552110483.

It is a happy number.

38401125515028 is a `hidden beast` number, since 3 + 8 + 4 + 0 + 1 + 125 + 515 + 0 + 2 + 8 = 666.

It is a super-3 number, since 3×384011255150283 (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38401125515023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45781050 + ... + 46612302.

It is an arithmetic number, because the mean of its divisors is an integer number (558602688000).

Almost surely, 238401125515028 is an apocalyptic number.

38401125515028 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38401125515028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53625858048000).

38401125515028 is an abundant number, since it is smaller than the sum of its proper divisors (68850590580972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38401125515028 is a wasteful number, since it uses less digits than its factorization.

38401125515028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831811 (or 831803 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 45.

The spelling of 38401125515028 in words is "thirty-eight trillion, four hundred one billion, one hundred twenty-five million, five hundred fifteen thousand, twenty-eight".