79805472 has 48 divisors (see below), whose sum is σ = 220520160. Its totient is φ = 25201152.

The previous prime is 79805461. The next prime is 79805513. The reversal of 79805472 is 27450897.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×79805472² = 12737826722285568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20053 + ... + 23700.

It is an arithmetic number, because the mean of its divisors is an integer number (4594170).

Almost surely, 2^79805472 is an apocalyptic number.

It is an amenable number.

79805472 is an abundant number, since it is smaller than the sum of its proper divisors (140714688).

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

79805472 is a wasteful number, since it uses less digits than its factorization.

79805472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43785 (or 43777 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 79805472 is about 8933.3908455860. The cubic root of 79805472 is about 430.5374063199.

The spelling of 79805472 in words is "seventy-nine million, eight hundred five thousand, four hundred seventy-two".