78720350 has 24 divisors (see below), whose sum is σ = 147938448. Its totient is φ = 31161600.

The previous prime is 78720311. The next prime is 78720359. The reversal of 78720350 is 5302787.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78720359) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3266 + ... + 12965.

It is an arithmetic number, because the mean of its divisors is an integer number (6164102).

Almost surely, 2^78720350 is an apocalyptic number.

78720350 is a deficient number, since it is larger than the sum of its proper divisors (69218098).

78720350 is a wasteful number, since it uses less digits than its factorization.

78720350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16340 (or 16335 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 78720350 is about 8872.4489291289. The cubic root of 78720350 is about 428.5771430455.

The spelling of 78720350 in words is "seventy-eight million, seven hundred twenty thousand, three hundred fifty".