78269248 has 14 divisors (see below), whose sum is σ = 155315666. Its totient is φ = 39134592.

The previous prime is 78269239. The next prime is 78269263. The reversal of 78269248 is 84296287.

It can be written as a sum of positive squares in only one way, i.e., 47444544 + 30824704 = 6888^2 + 5552^2 .

It is a super-2 number, since 2×78269248² = 12252150364971008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78269198 and 78269207.

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, 611415 + ... + 611542.

Almost surely, 2^78269248 is an apocalyptic number.

It is an amenable number.

78269248 is a deficient number, since it is larger than the sum of its proper divisors (77046418).

78269248 is a wasteful number, since it uses less digits than its factorization.

78269248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222969 (or 1222959 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 78269248 is about 8846.9909008657. The cubic root of 78269248 is about 427.7569295562.

The spelling of 78269248 in words is "seventy-eight million, two hundred sixty-nine thousand, two hundred forty-eight".