78874590 has 32 divisors (see below), whose sum is σ = 197531136. Its totient is φ = 20118560.

The previous prime is 78874589. The next prime is 78874591. The reversal of 78874590 is 9547887.

It is an interprime number because it is at equal distance from previous prime (78874589) and next prime (78874591).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78874591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56466 + ... + 57845.

It is an arithmetic number, because the mean of its divisors is an integer number (6172848).

Almost surely, 2^78874590 is an apocalyptic number.

78874590 is an abundant number, since it is smaller than the sum of its proper divisors (118656546).

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

78874590 is a wasteful number, since it uses less digits than its factorization.

78874590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114344.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 78874590 is about 8881.1367515651. The cubic root of 78874590 is about 428.8568700040.

The spelling of 78874590 in words is "seventy-eight million, eight hundred seventy-four thousand, five hundred ninety".