78353380 has 24 divisors (see below), whose sum is σ = 188048448. Its totient is φ = 26863968.

The previous prime is 78353377. The next prime is 78353413. The reversal of 78353380 is 8335387.

It is a super-2 number, since 2×78353380² = 12278504314848800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 279694 + ... + 279973.

It is an arithmetic number, because the mean of its divisors is an integer number (7835352).

Almost surely, 2^78353380 is an apocalyptic number.

78353380 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

78353380 is an abundant number, since it is smaller than the sum of its proper divisors (109695068).

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

78353380 is a wasteful number, since it uses less digits than its factorization.

78353380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559683 (or 559681 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 78353380 is about 8851.7444608393. The cubic root of 78353380 is about 427.9101406833.

The spelling of 78353380 in words is "seventy-eight million, three hundred fifty-three thousand, three hundred eighty".