Search a number
-
+
72025149 = 3721812707
BaseRepresentation
bin1000100101100…
…00010000111101
312000112020221010
410102300100331
5121414301044
611051425433
71533126600
oct422602075
9160466833
1072025149
1137724619
1220155279
1311bca541
1497cc337
1564cabb9
hex44b043d

72025149 has 24 divisors (see below), whose sum is σ = 112371168. Its totient is φ = 40914720.

The previous prime is 72025139. The next prime is 72025189. The reversal of 72025149 is 94152027.

It is not a de Polignac number, because 72025149 - 221 = 69927997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72025139) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 25254 + ... + 27960.

It is an arithmetic number, because the mean of its divisors is an integer number (4682132).

Almost surely, 272025149 is an apocalyptic number.

It is an amenable number.

72025149 is a deficient number, since it is larger than the sum of its proper divisors (40346019).

72025149 is a wasteful number, since it uses less digits than its factorization.

72025149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2905 (or 2898 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 72025149 is about 8486.7631638923. The cubic root of 72025149 is about 416.0651960349.

The spelling of 72025149 in words is "seventy-two million, twenty-five thousand, one hundred forty-nine".

Divisors: 1 3 7 21 49 147 181 543 1267 2707 3801 8121 8869 18949 26607 56847 132643 397929 489967 1469901 3429769 10289307 24008383 72025149