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140038470 = 23551113231
BaseRepresentation
bin10000101100011…
…01000101000110
3100202111200200000
420112031011012
5241322212340
621521302130
73320210265
oct1026150506
9322450600
10140038470
1172058a80
123aa94946
1323021a00
14148545dc
15c462d30
hex858d146

140038470 has 288 divisors, whose sum is σ = 460422144. Its totient is φ = 30326400.

The previous prime is 140038463. The next prime is 140038499. The reversal of 140038470 is 74830041.

It is a super-3 number, since 3×1400384703 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4517355 + ... + 4517385.

It is an arithmetic number, because the mean of its divisors is an integer number (1598688).

Almost surely, 2140038470 is an apocalyptic number.

140038470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140038470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230211072).

140038470 is an abundant number, since it is smaller than the sum of its proper divisors (320383674).

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

140038470 is a wasteful number, since it uses less digits than its factorization.

140038470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 140038470 is about 11833.7851087469. The cubic root of 140038470 is about 519.2969666028.

The spelling of 140038470 in words is "one hundred forty million, thirty-eight thousand, four hundred seventy".