78880530 has 16 divisors (see below), whose sum is σ = 189313344. Its totient is φ = 21034800.

The previous prime is 78880511. The next prime is 78880531. The reversal of 78880530 is 3508887.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78880531) 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, 1314646 + ... + 1314705.

It is an arithmetic number, because the mean of its divisors is an integer number (11832084).

Almost surely, 2^78880530 is an apocalyptic number.

78880530 is an abundant number, since it is smaller than the sum of its proper divisors (110432814).

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

78880530 is a wasteful number, since it uses less digits than its factorization.

78880530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2629361.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 78880530 is about 8881.4711619191. The cubic root of 78880530 is about 428.8676353884.

It can be divided in two parts, 788 and 80530, that added together give a palindrome (81318).

The spelling of 78880530 in words is "seventy-eight million, eight hundred eighty thousand, five hundred thirty".