79000072 has 8 divisors (see below), whose sum is σ = 148125150. Its totient is φ = 39500032.

The previous prime is 79000021. The next prime is 79000087. The reversal of 79000072 is 27000097.

It can be written as a sum of positive squares in only one way, i.e., 77545636 + 1454436 = 8806^2 + 1206^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×79000072² = 12482022752010368, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 4937497 + ... + 4937512.

Almost surely, 2^79000072 is an apocalyptic number.

It is an amenable number.

79000072 is a deficient number, since it is larger than the sum of its proper divisors (69125078).

79000072 is a wasteful number, since it uses less digits than its factorization.

79000072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9875015 (or 9875011 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 79000072 is about 8888.1984676311. The cubic root of 79000072 is about 429.0841730572.

Adding to 79000072 its sum of digits (25), we get a palindrome (79000097).

The spelling of 79000072 in words is "seventy-nine million, seventy-two", and thus it is an aban number and an uban number.