72583478 has 16 divisors (see below), whose sum is σ = 118941696. Its totient is φ = 32945640.

The previous prime is 72583471. The next prime is 72583481. The reversal of 72583478 is 87438527.

It is a happy number.

It is a super-2 number, since 2×72583478² = 10536722557152968, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72583471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17075 + ... + 20897.

It is an arithmetic number, because the mean of its divisors is an integer number (7433856).

Almost surely, 2^72583478 is an apocalyptic number.

72583478 is a deficient number, since it is larger than the sum of its proper divisors (46358218).

72583478 is a wasteful number, since it uses less digits than its factorization.

72583478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4699.

The product of its digits is 376320, while the sum is 44.

The square root of 72583478 is about 8519.5937696583. The cubic root of 72583478 is about 417.1375232431.

The spelling of 72583478 in words is "seventy-two million, five hundred eighty-three thousand, four hundred seventy-eight".