78426952 has 8 divisors (see below), whose sum is σ = 147050550. Its totient is φ = 39213472.

The previous prime is 78426947. The next prime is 78427021. The reversal of 78426952 is 25962487.

It can be written as a sum of positive squares in only one way, i.e., 53085796 + 25341156 = 7286^2 + 5034^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 78426899 and 78426908.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4901677 + ... + 4901692.

Almost surely, 2^78426952 is an apocalyptic number.

It is an amenable number.

78426952 is a deficient number, since it is larger than the sum of its proper divisors (68623598).

78426952 is a wasteful number, since it uses less digits than its factorization.

78426952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9803375 (or 9803371 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 78426952 is about 8855.8992767533. The cubic root of 78426952 is about 428.0440313393.

The spelling of 78426952 in words is "seventy-eight million, four hundred twenty-six thousand, nine hundred fifty-two".