72587478 has 16 divisors (see below), whose sum is σ = 145280880. Its totient is φ = 24178176.

The previous prime is 72587423. The next prime is 72587509. The reversal of 72587478 is 87478527.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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, 6618 + ... + 13746.

It is an arithmetic number, because the mean of its divisors is an integer number (9080055).

Almost surely, 2^72587478 is an apocalyptic number.

72587478 is an abundant number, since it is smaller than the sum of its proper divisors (72693402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72587478 is a wasteful number, since it uses less digits than its factorization.

72587478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831.

The product of its digits is 878080, while the sum is 48.

The square root of 72587478 is about 8519.8285194011. The cubic root of 72587478 is about 417.1451857741.

The spelling of 72587478 in words is "seventy-two million, five hundred eighty-seven thousand, four hundred seventy-eight".