79866240 has 64 divisors (see below), whose sum is σ = 254579760. Its totient is φ = 21297152.

The previous prime is 79866229. The next prime is 79866257. The reversal of 79866240 is 4266897.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 79866192 and 79866201.

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, 18879 + ... + 22718.

Almost surely, 2^79866240 is an apocalyptic number.

It is an amenable number.

79866240 is an abundant number, since it is smaller than the sum of its proper divisors (174713520).

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

79866240 is a wasteful number, since it uses less digits than its factorization.

79866240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41619 (or 41607 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 79866240 is about 8936.7913705088. The cubic root of 79866240 is about 430.6466563862.

The spelling of 79866240 in words is "seventy-nine million, eight hundred sixty-six thousand, two hundred forty".