71942220 has 72 divisors (see below), whose sum is σ = 249404064. Its totient is φ = 16443648.

The previous prime is 71942209. The next prime is 71942231. The reversal of 71942220 is 2224917.

It is an interprime number because it is at equal distance from previous prime (71942209) and next prime (71942231).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27289 + ... + 29808.

Almost surely, 2^71942220 is an apocalyptic number.

71942220 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71942220 is an abundant number, since it is smaller than the sum of its proper divisors (177461844).

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

71942220 is a wasteful number, since it uses less digits than its factorization.

71942220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57119 (or 57114 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 71942220 is about 8481.8759717412. The cubic root of 71942220 is about 415.9054503440.

The spelling of 71942220 in words is "seventy-one million, nine hundred forty-two thousand, two hundred twenty".