78144604 has 6 divisors (see below), whose sum is σ = 136753064. Its totient is φ = 39072300.

The previous prime is 78144601. The next prime is 78144613. The reversal of 78144604 is 40644187.

It is a super-2 number, since 2×78144604² = 12213158268633632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78144604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78144601) by changing a digit.

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 as a sum of consecutive naturals, namely, 9768072 + ... + 9768079.

Almost surely, 2^78144604 is an apocalyptic number.

It is an amenable number.

78144604 is a deficient number, since it is larger than the sum of its proper divisors (58608460).

78144604 is a wasteful number, since it uses less digits than its factorization.

78144604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19536155 (or 19536153 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 78144604 is about 8839.9436649789. The cubic root of 78144604 is about 427.5297408717.

The spelling of 78144604 in words is "seventy-eight million, one hundred forty-four thousand, six hundred four".