78160590 has 24 divisors (see below), whose sum is σ = 203217768. Its totient is φ = 20842800.

The previous prime is 78160553. The next prime is 78160591. The reversal of 78160590 is 9506187.

78160590 is a `hidden beast` number, since 7 + 8 + 1 + 60 + 590 = 666.

It is a super-2 number, since 2×78160590² = 12218155658296200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78160591) 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, 434136 + ... + 434315.

It is an arithmetic number, because the mean of its divisors is an integer number (8467407).

Almost surely, 2^78160590 is an apocalyptic number.

78160590 is an abundant number, since it is smaller than the sum of its proper divisors (125057178).

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

78160590 is a wasteful number, since it uses less digits than its factorization.

78160590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868464 (or 868461 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 78160590 is about 8840.8478100237. The cubic root of 78160590 is about 427.5588920611.

The spelling of 78160590 in words is "seventy-eight million, one hundred sixty thousand, five hundred ninety".