72583138 has 8 divisors (see below), whose sum is σ = 109065132. Its totient is φ = 36228096.

The previous prime is 72583127. The next prime is 72583163. The reversal of 72583138 is 83138527.

It can be written as a sum of positive squares in 2 ways, for example, as 59644729 + 12938409 = 7723^2 + 3597^2 .

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 = 72583097 and 72583106.

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 3 ways as a sum of consecutive naturals, for example, 30295 + ... + 32602.

Almost surely, 2^72583138 is an apocalyptic number.

72583138 is a deficient number, since it is larger than the sum of its proper divisors (36481994).

72583138 is a wasteful number, since it uses less digits than its factorization.

72583138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63476.

The product of its digits is 40320, while the sum is 37.

The square root of 72583138 is about 8519.5738156319. The cubic root of 72583138 is about 417.1368719150.

The spelling of 72583138 in words is "seventy-two million, five hundred eighty-three thousand, one hundred thirty-eight".