72334138 has 16 divisors (see below), whose sum is σ = 111530880. Its totient is φ = 35171136.

The previous prime is 72334123. The next prime is 72334147. The reversal of 72334138 is 83143327.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7170 + ... + 14002.

It is an arithmetic number, because the mean of its divisors is an integer number (6970680).

Almost surely, 2^72334138 is an apocalyptic number.

72334138 is a deficient number, since it is larger than the sum of its proper divisors (39196742).

72334138 is a wasteful number, since it uses less digits than its factorization.

72334138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6981.

The product of its digits is 12096, while the sum is 31.

The square root of 72334138 is about 8504.9478540436. The cubic root of 72334138 is about 416.6593226083.

The spelling of 72334138 in words is "seventy-two million, three hundred thirty-four thousand, one hundred thirty-eight".