72745510 has 16 divisors (see below), whose sum is σ = 132145200. Its totient is φ = 28830816.

The previous prime is 72745459. The next prime is 72745549. The reversal of 72745510 is 1554727.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32280 + ... + 34459.

It is an arithmetic number, because the mean of its divisors is an integer number (8259075).

Almost surely, 2^72745510 is an apocalyptic number.

72745510 is a deficient number, since it is larger than the sum of its proper divisors (59399690).

72745510 is a wasteful number, since it uses less digits than its factorization.

72745510 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66855.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 72745510 is about 8529.0978420933. The cubic root of 72745510 is about 417.4476920614.

The spelling of 72745510 in words is "seventy-two million, seven hundred forty-five thousand, five hundred ten".