72761422 has 4 divisors (see below), whose sum is σ = 109142136. Its totient is φ = 36380710.

The previous prime is 72761417. The next prime is 72761441. The reversal of 72761422 is 22416727.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18190354 + ... + 18190357.

It is an arithmetic number, because the mean of its divisors is an integer number (27285534).

Almost surely, 2^72761422 is an apocalyptic number.

72761422 is a deficient number, since it is larger than the sum of its proper divisors (36380714).

72761422 is a wasteful number, since it uses less digits than its factorization.

72761422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36380713.

The product of its digits is 9408, while the sum is 31.

The square root of 72761422 is about 8530.0305978349. The cubic root of 72761422 is about 417.4781266703.

The spelling of 72761422 in words is "seventy-two million, seven hundred sixty-one thousand, four hundred twenty-two".