72500770 has 32 divisors (see below), whose sum is σ = 138271680. Its totient is φ = 27293760.

The previous prime is 72500759. The next prime is 72500777. The reversal of 72500770 is 7700527.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72500777) 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, 29800 + ... + 32140.

It is an arithmetic number, because the mean of its divisors is an integer number (4320990).

Almost surely, 2^72500770 is an apocalyptic number.

72500770 is a deficient number, since it is larger than the sum of its proper divisors (65770910).

72500770 is a wasteful number, since it uses less digits than its factorization.

72500770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530.

The product of its (nonzero) digits is 3430, while the sum is 28.

The square root of 72500770 is about 8514.7383988000. The cubic root of 72500770 is about 416.9790219613.

The spelling of 72500770 in words is "seventy-two million, five hundred thousand, seven hundred seventy".