78722430 has 32 divisors (see below), whose sum is σ = 190811808. Its totient is φ = 20784000.

The previous prime is 78722417. The next prime is 78722471. The reversal of 78722430 is 3422787.

It is a junction number, because it is equal to n+sod(n) for n = 78722391 and 78722400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9961 + ... + 16020.

It is an arithmetic number, because the mean of its divisors is an integer number (5962869).

Almost surely, 2^78722430 is an apocalyptic number.

78722430 is an abundant number, since it is smaller than the sum of its proper divisors (112089378).

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

78722430 is a wasteful number, since it uses less digits than its factorization.

78722430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26092.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 78722430 is about 8872.5661451465. The cubic root of 78722430 is about 428.5809177264.

The spelling of 78722430 in words is "seventy-eight million, seven hundred twenty-two thousand, four hundred thirty".