73928020 has 12 divisors (see below), whose sum is σ = 155248884. Its totient is φ = 29571200.

The previous prime is 73927999. The next prime is 73928033. The reversal of 73928020 is 2082937.

It can be written as a sum of positive squares in 2 ways, for example, as 14884164 + 59043856 = 3858^2 + 7684^2 .

It is a super-2 number, since 2×73928020² = 10930704282240800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1848181 + ... + 1848220.

It is an arithmetic number, because the mean of its divisors is an integer number (12937407).

Almost surely, 2^73928020 is an apocalyptic number.

It is an amenable number.

73928020 is an abundant number, since it is smaller than the sum of its proper divisors (81320864).

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

73928020 is a wasteful number, since it uses less digits than its factorization.

73928020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3696410 (or 3696408 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 73928020 is about 8598.1404966423. The cubic root of 73928020 is about 419.6974767803.

The spelling of 73928020 in words is "seventy-three million, nine hundred twenty-eight thousand, twenty".