79260640 has 48 divisors (see below), whose sum is σ = 189220752. Its totient is φ = 31371264.

The previous prime is 79260619. The next prime is 79260689. The reversal of 79260640 is 4606297.

It is a junction number, because it is equal to n+sod(n) for n = 79260596 and 79260605.

It is a congruent number.

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, 12967 + ... + 18073.

It is an arithmetic number, because the mean of its divisors is an integer number (3942099).

Almost surely, 2^79260640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 79260640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94610376).

79260640 is an abundant number, since it is smaller than the sum of its proper divisors (109960112).

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

79260640 is a wasteful number, since it uses less digits than its factorization.

79260640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5219 (or 5211 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 79260640 is about 8902.8444892630. The cubic root of 79260640 is about 429.5554085171. Note that the first 3 decimals are identical.

The spelling of 79260640 in words is "seventy-nine million, two hundred sixty thousand, six hundred forty".