71942920 has 32 divisors (see below), whose sum is σ = 184996800. Its totient is φ = 24666048.

The previous prime is 71942903. The next prime is 71942921. The reversal of 71942920 is 2924917.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71942921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128190 + ... + 128749.

It is an arithmetic number, because the mean of its divisors is an integer number (5781150).

Almost surely, 2^71942920 is an apocalyptic number.

71942920 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

71942920 is an abundant number, since it is smaller than the sum of its proper divisors (113053880).

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

71942920 is a wasteful number, since it uses less digits than its factorization.

71942920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256957 (or 256953 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 71942920 is about 8481.9172360970. The cubic root of 71942920 is about 415.9067992638.

The spelling of 71942920 in words is "seventy-one million, nine hundred forty-two thousand, nine hundred twenty".