71952220 has 12 divisors (see below), whose sum is σ = 151099704. Its totient is φ = 28780880.

The previous prime is 71952203. The next prime is 71952227. The reversal of 71952220 is 2225917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71952227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1798786 + ... + 1798825.

It is an arithmetic number, because the mean of its divisors is an integer number (12591642).

Almost surely, 2^71952220 is an apocalyptic number.

It is an amenable number.

71952220 is an abundant number, since it is smaller than the sum of its proper divisors (79147484).

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

71952220 is a wasteful number, since it uses less digits than its factorization.

71952220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597620 (or 3597618 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 71952220 is about 8482.4654434899. The cubic root of 71952220 is about 415.9247197976.

The spelling of 71952220 in words is "seventy-one million, nine hundred fifty-two thousand, two hundred twenty".