73421416 has 16 divisors (see below), whose sum is σ = 138024900. Its totient is φ = 36614784.

The previous prime is 73421399. The next prime is 73421437. The reversal of 73421416 is 61412437.

It can be written as a sum of positive squares in 2 ways, for example, as 62884900 + 10536516 = 7930^2 + 3246^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8685 + ... + 14908.

Almost surely, 2^73421416 is an apocalyptic number.

It is an amenable number.

73421416 is a deficient number, since it is larger than the sum of its proper divisors (64603484).

73421416 is a wasteful number, since it uses less digits than its factorization.

73421416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23988 (or 23984 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 73421416 is about 8568.6297621032. The cubic root of 73421416 is about 418.7365964077.

It can be divided in two parts, 73421 and 416, that added together give a palindrome (73837).

The spelling of 73421416 in words is "seventy-three million, four hundred twenty-one thousand, four hundred sixteen".