78299748 has 36 divisors (see below), whose sum is σ = 199447248. Its totient is φ = 25899120.

The previous prime is 78299743. The next prime is 78299761. The reversal of 78299748 is 84799287.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×78299748² = 12261701073727008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78299694 and 78299703.

It is not an unprimeable number, because it can be changed into a prime (78299743) 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 in 11 ways as a sum of consecutive naturals, for example, 3586 + ... + 13017.

Almost surely, 2^78299748 is an apocalyptic number.

It is an amenable number.

78299748 is an abundant number, since it is smaller than the sum of its proper divisors (121147500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78299748 is a wasteful number, since it uses less digits than its factorization.

78299748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16744 (or 16739 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 78299748 is about 8848.7144829065. The cubic root of 78299748 is about 427.8124851858.

The spelling of 78299748 in words is "seventy-eight million, two hundred ninety-nine thousand, seven hundred forty-eight".