77296540 has 12 divisors (see below), whose sum is σ = 162322776. Its totient is φ = 30918608.

The previous prime is 77296511. The next prime is 77296543. The reversal of 77296540 is 4569277.

It is a junction number, because it is equal to n+sod(n) for n = 77296493 and 77296502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77296543) 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, 1932394 + ... + 1932433.

It is an arithmetic number, because the mean of its divisors is an integer number (13526898).

Almost surely, 2^77296540 is an apocalyptic number.

It is an amenable number.

77296540 is an abundant number, since it is smaller than the sum of its proper divisors (85026236).

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

77296540 is a wasteful number, since it uses less digits than its factorization.

77296540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3864836 (or 3864834 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 77296540 is about 8791.8450850774. The cubic root of 77296540 is about 425.9775238496.

The spelling of 77296540 in words is "seventy-seven million, two hundred ninety-six thousand, five hundred forty".