71920926 has 128 divisors (see below), whose sum is σ = 203904000. Its totient is φ = 18627840.

The previous prime is 71920921. The next prime is 71920939. The reversal of 71920926 is 62902917.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71920921) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 203566 + ... + 203918.

It is an arithmetic number, because the mean of its divisors is an integer number (1593000).

Almost surely, 2^71920926 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71920926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101952000).

71920926 is an abundant number, since it is smaller than the sum of its proper divisors (131983074).

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

71920926 is a wasteful number, since it uses less digits than its factorization.

71920926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396 (or 376 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 71920926 is about 8480.6206140824. The cubic root of 71920926 is about 415.8644120191.

Subtracting from 71920926 its reverse (62902917), we obtain a square (9018009 = 3003²).

The spelling of 71920926 in words is "seventy-one million, nine hundred twenty thousand, nine hundred twenty-six".