72902638 has 8 divisors (see below), whose sum is σ = 112881600. Its totient is φ = 35275440.

The previous prime is 72902629. The next prime is 72902651. The reversal of 72902638 is 83620927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72902597 and 72902606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587863 + ... + 587986.

It is an arithmetic number, because the mean of its divisors is an integer number (14110200).

Almost surely, 2^72902638 is an apocalyptic number.

72902638 is a deficient number, since it is larger than the sum of its proper divisors (39978962).

72902638 is a wasteful number, since it uses less digits than its factorization.

72902638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175882.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 72902638 is about 8538.3041641769. The cubic root of 72902638 is about 417.7480338579.

The spelling of 72902638 in words is "seventy-two million, nine hundred two thousand, six hundred thirty-eight".