77940268 has 12 divisors (see below), whose sum is σ = 155880592. Its totient is φ = 33402960.

The previous prime is 77940217. The next prime is 77940271. The reversal of 77940268 is 86204977.

77940268 is an admirable number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1391763 + ... + 1391818.

Almost surely, 2^77940268 is an apocalyptic number.

It is an amenable number.

77940268 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

77940268 is a wasteful number, since it uses less digits than its factorization.

77940268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783592 (or 2783590 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 77940268 is about 8828.3785600755. The cubic root of 77940268 is about 427.1567743136.

The spelling of 77940268 in words is "seventy-seven million, nine hundred forty thousand, two hundred sixty-eight".