Search a number
-
+
72713908 = 22131193719
BaseRepresentation
bin1000101010110…
…00011010110100
312001211020201201
410111120122310
5122103321113
611114302244
71542025621
oct425303264
9161736651
1072713908
1138055043
1220427984
13120abba7
14992b348
1565b4cdd
hex45586b4

72713908 has 24 divisors (see below), whose sum is σ = 129064320. Its totient is φ = 35842560.

The previous prime is 72713897. The next prime is 72713909. The reversal of 72713908 is 80931727.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72713909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100773 + ... + 101491.

It is an arithmetic number, because the mean of its divisors is an integer number (5377680).

Almost surely, 272713908 is an apocalyptic number.

It is an amenable number.

72713908 is a deficient number, since it is larger than the sum of its proper divisors (56350412).

72713908 is a wasteful number, since it uses less digits than its factorization.

72713908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 72713908 is about 8527.2450416298. The cubic root of 72713908 is about 417.3872342969.

The spelling of 72713908 in words is "seventy-two million, seven hundred thirteen thousand, nine hundred eight".

Divisors: 1 2 4 131 193 262 386 524 719 772 1438 2876 25283 50566 94189 101132 138767 188378 277534 376756 555068 18178477 36356954 72713908