72610738 has 4 divisors (see below), whose sum is σ = 108916110. Its totient is φ = 36305368.

The previous prime is 72610729. The next prime is 72610763. The reversal of 72610738 is 83701627.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83701627 = 29 ⋅2886263.

It can be written as a sum of positive squares in only one way, i.e., 67026969 + 5583769 = 8187^2 + 2363^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18152683 + ... + 18152686.

Almost surely, 2^72610738 is an apocalyptic number.

72610738 is a deficient number, since it is larger than the sum of its proper divisors (36305372).

72610738 is a wasteful number, since it uses less digits than its factorization.

72610738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36305371.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 72610738 is about 8521.1934610124. The cubic root of 72610738 is about 417.1897378148.

The spelling of 72610738 in words is "seventy-two million, six hundred ten thousand, seven hundred thirty-eight".