78367448 has 8 divisors (see below), whose sum is σ = 146938980. Its totient is φ = 39183720.

The previous prime is 78367409. The next prime is 78367459. The reversal of 78367448 is 84476387.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×78367448² = 12282913812065408, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4897958 + ... + 4897973.

Almost surely, 2^78367448 is an apocalyptic number.

It is an amenable number.

78367448 is a deficient number, since it is larger than the sum of its proper divisors (68571532).

78367448 is a wasteful number, since it uses less digits than its factorization.

78367448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9795937 (or 9795933 counting only the distinct ones).

The product of its digits is 903168, while the sum is 47.

The square root of 78367448 is about 8852.5390707977. The cubic root of 78367448 is about 427.9357489367.

The spelling of 78367448 in words is "seventy-eight million, three hundred sixty-seven thousand, four hundred forty-eight".