71920296 has 48 divisors (see below), whose sum is σ = 222612000. Its totient is φ = 20548512.

The previous prime is 71920283. The next prime is 71920307. The reversal of 71920296 is 69202917.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 71920296.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70846 + ... + 71853.

It is an arithmetic number, because the mean of its divisors is an integer number (4637750).

Almost surely, 2^71920296 is an apocalyptic number.

It is an amenable number.

71920296 is an abundant number, since it is smaller than the sum of its proper divisors (150691704).

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

71920296 is a wasteful number, since it uses less digits than its factorization.

71920296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142718 (or 142711 counting only the distinct ones).

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

The square root of 71920296 is about 8480.5834704931. The cubic root of 71920296 is about 415.8631977441.

The spelling of 71920296 in words is "seventy-one million, nine hundred twenty thousand, two hundred ninety-six".