78298828 has 12 divisors (see below), whose sum is σ = 137462920. Its totient is φ = 39023712.

The previous prime is 78298823. The next prime is 78298837. The reversal of 78298828 is 82889287.

It is a super-2 number, since 2×78298828² = 12261412932347168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78298823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30018 + ... + 32521.

Almost surely, 2^78298828 is an apocalyptic number.

It is an amenable number.

78298828 is a deficient number, since it is larger than the sum of its proper divisors (59164092).

78298828 is a wasteful number, since it uses less digits than its factorization.

78298828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62856 (or 62854 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 52.

The square root of 78298828 is about 8848.6624978016. The cubic root of 78298828 is about 427.8108096205.

The spelling of 78298828 in words is "seventy-eight million, two hundred ninety-eight thousand, eight hundred twenty-eight".