78461592 has 64 divisors (see below), whose sum is σ = 214790400. Its totient is φ = 23687040.

The previous prime is 78461573. The next prime is 78461611. The reversal of 78461592 is 29516487.

It is an interprime number because it is at equal distance from previous prime (78461573) and next prime (78461611).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115558 + ... + 116234.

It is an arithmetic number, because the mean of its divisors is an integer number (3356100).

Almost surely, 2^78461592 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78461592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107395200).

78461592 is an abundant number, since it is smaller than the sum of its proper divisors (136328808).

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

78461592 is a wasteful number, since it uses less digits than its factorization.

78461592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136 (or 1132 counting only the distinct ones).

The product of its digits is 120960, while the sum is 42.

The square root of 78461592 is about 8857.8548193115. The cubic root of 78461592 is about 428.1070422574.

The spelling of 78461592 in words is "seventy-eight million, four hundred sixty-one thousand, five hundred ninety-two".