72494987 has 8 divisors (see below), whose sum is σ = 77552496. Its totient is φ = 67525632.

The previous prime is 72494977. The next prime is 72494993. The reversal of 72494987 is 78949427.

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

It is not a de Polignac number, because 72494987 - 2⁴ = 72494971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72494977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20333 + ... + 23630.

It is an arithmetic number, because the mean of its divisors is an integer number (9694062).

Almost surely, 2^72494987 is an apocalyptic number.

72494987 is a deficient number, since it is larger than the sum of its proper divisors (5057509).

72494987 is a wasteful number, since it uses less digits than its factorization.

72494987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44077.

The product of its digits is 1016064, while the sum is 50.

The square root of 72494987 is about 8514.3988043784. The cubic root of 72494987 is about 416.9679349351.

The spelling of 72494987 in words is "seventy-two million, four hundred ninety-four thousand, nine hundred eighty-seven".