78242604 has 24 divisors (see below), whose sum is σ = 199163328. Its totient is φ = 23709840.

The previous prime is 78242603. The next prime is 78242629. The reversal of 78242604 is 40624287.

It is a super-2 number, since 2×78242604² = 12243810161401632, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (78242603) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 296242 + ... + 296505.

It is an arithmetic number, because the mean of its divisors is an integer number (8298472).

Almost surely, 2^78242604 is an apocalyptic number.

It is an amenable number.

78242604 is an abundant number, since it is smaller than the sum of its proper divisors (120920724).

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

78242604 is a wasteful number, since it uses less digits than its factorization.

78242604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 592765 (or 592763 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 78242604 is about 8845.4849499618. The cubic root of 78242604 is about 427.7083858032.

The spelling of 78242604 in words is "seventy-eight million, two hundred forty-two thousand, six hundred four".