78749204 has 6 divisors (see below), whose sum is σ = 137811114. Its totient is φ = 39374600.

The previous prime is 78749201. The next prime is 78749227. The reversal of 78749204 is 40294787.

It can be written as a sum of positive squares in only one way, i.e., 69689104 + 9060100 = 8348^2 + 3010^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78749201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9843647 + ... + 9843654.

It is an arithmetic number, because the mean of its divisors is an integer number (22968519).

Almost surely, 2^78749204 is an apocalyptic number.

It is an amenable number.

78749204 is a deficient number, since it is larger than the sum of its proper divisors (59061910).

78749204 is a wasteful number, since it uses less digits than its factorization.

78749204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19687305 (or 19687303 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 78749204 is about 8874.0748250170. The cubic root of 78749204 is about 428.6294999193.

The spelling of 78749204 in words is "seventy-eight million, seven hundred forty-nine thousand, two hundred four".