78650544 has 80 divisors (see below), whose sum is σ = 233913600. Its totient is φ = 22306560.

The previous prime is 78650543. The next prime is 78650573. The reversal of 78650544 is 44505687.

It is not an unprimeable number, because it can be changed into a prime (78650543) 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, 49279 + ... + 50849.

It is an arithmetic number, because the mean of its divisors is an integer number (2923920).

Almost surely, 2^78650544 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 78650544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116956800).

78650544 is an abundant number, since it is smaller than the sum of its proper divisors (155263056).

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

78650544 is a wasteful number, since it uses less digits than its factorization.

78650544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1738 (or 1732 counting only the distinct ones).

The product of its (nonzero) digits is 134400, while the sum is 39.

The square root of 78650544 is about 8868.5141934825. The cubic root of 78650544 is about 428.4504239970.

The spelling of 78650544 in words is "seventy-eight million, six hundred fifty thousand, five hundred forty-four".