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72328790 = 25231072939
BaseRepresentation
bin1000100111110…
…10011001010110
312001002200110002
410103322121112
5122004010130
611102131302
71535533052
oct423723126
9161080402
1072328790
1137911766
1220280b32
1311ca5801
14986ac62
15653ab45
hex44fa656

72328790 has 32 divisors (see below), whose sum is σ = 137168640. Its totient is φ = 27405664.

The previous prime is 72328759. The next prime is 72328799. The reversal of 72328790 is 9782327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72328799) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23141 + ... + 26079.

It is an arithmetic number, because the mean of its divisors is an integer number (4286520).

Almost surely, 272328790 is an apocalyptic number.

72328790 is a deficient number, since it is larger than the sum of its proper divisors (64839850).

72328790 is a wasteful number, since it uses less digits than its factorization.

72328790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 72328790 is about 8504.6334430121. The cubic root of 72328790 is about 416.6490538333.

The spelling of 72328790 in words is "seventy-two million, three hundred twenty-eight thousand, seven hundred ninety".

Divisors: 1 2 5 10 23 46 107 115 214 230 535 1070 2461 2939 4922 5878 12305 14695 24610 29390 67597 135194 314473 337985 628946 675970 1572365 3144730 7232879 14465758 36164395 72328790