78907950 has 144 divisors (see below), whose sum is σ = 243734400. Its totient is φ = 18100800.

The previous prime is 78907949. The next prime is 78907973. The reversal of 78907950 is 5970987.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 78907896 and 78907905.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 93631 + ... + 94469.

It is an arithmetic number, because the mean of its divisors is an integer number (1692600).

Almost surely, 2^78907950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78907950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121867200).

78907950 is an abundant number, since it is smaller than the sum of its proper divisors (164826450).

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

78907950 is a wasteful number, since it uses less digits than its factorization.

78907950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 78907950 is about 8883.0146909706. The cubic root of 78907950 is about 428.9173231387.

The spelling of 78907950 in words is "seventy-eight million, nine hundred seven thousand, nine hundred fifty".