71922140 has 12 divisors (see below), whose sum is σ = 151036536. Its totient is φ = 28768848.

The previous prime is 71922133. The next prime is 71922161. The reversal of 71922140 is 4122917.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1798034 + ... + 1798073.

It is an arithmetic number, because the mean of its divisors is an integer number (12586378).

Almost surely, 2^71922140 is an apocalyptic number.

It is an amenable number.

71922140 is an abundant number, since it is smaller than the sum of its proper divisors (79114396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71922140 is a wasteful number, since it uses less digits than its factorization.

71922140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596116 (or 3596114 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 71922140 is about 8480.6921887308. The cubic root of 71922140 is about 415.8667518877.

The spelling of 71922140 in words is "seventy-one million, nine hundred twenty-two thousand, one hundred forty".