72634121 has 12 divisors (see below), whose sum is σ = 84692880. Its totient is φ = 62110440.

The previous prime is 72634117. The next prime is 72634127. The reversal of 72634121 is 12143627.

It is not a de Polignac number, because 72634121 - 2² = 72634117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72634127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22550 + ... + 25568.

It is an arithmetic number, because the mean of its divisors is an integer number (7057740).

Almost surely, 2^72634121 is an apocalyptic number.

It is an amenable number.

72634121 is a deficient number, since it is larger than the sum of its proper divisors (12058759).

72634121 is a wasteful number, since it uses less digits than its factorization.

72634121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524 (or 3517 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 72634121 is about 8522.5654001597. The cubic root of 72634121 is about 417.2345158597.

Adding to 72634121 its reverse (12143627), we get a palindrome (84777748).

The spelling of 72634121 in words is "seventy-two million, six hundred thirty-four thousand, one hundred twenty-one".