78601420 has 24 divisors (see below), whose sum is σ = 168903504. Its totient is φ = 30709056.

The previous prime is 78601381. The next prime is 78601429. The reversal of 78601420 is 2410687.

It is not an unprimeable number, because it can be changed into a prime (78601429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44839 + ... + 46558.

It is an arithmetic number, because the mean of its divisors is an integer number (7037646).

Almost surely, 2^78601420 is an apocalyptic number.

It is an amenable number.

78601420 is an abundant number, since it is smaller than the sum of its proper divisors (90302084).

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

78601420 is a wasteful number, since it uses less digits than its factorization.

78601420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91449 (or 91447 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 78601420 is about 8865.7441876021. The cubic root of 78601420 is about 428.3612040925.

The spelling of 78601420 in words is "seventy-eight million, six hundred one thousand, four hundred twenty".