77326812 has 120 divisors (see below), whose sum is σ = 217712880. Its totient is φ = 23846400.

The previous prime is 77326787. The next prime is 77326819. The reversal of 77326812 is 21862377.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77326819) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 556239 + ... + 556377.

It is an arithmetic number, because the mean of its divisors is an integer number (1814274).

Almost surely, 2^77326812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77326812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108856440).

77326812 is an abundant number, since it is smaller than the sum of its proper divisors (140386068).

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

77326812 is a wasteful number, since it uses less digits than its factorization.

77326812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 262 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 77326812 is about 8793.5665119450. The cubic root of 77326812 is about 426.0331257716.

The spelling of 77326812 in words is "seventy-seven million, three hundred twenty-six thousand, eight hundred twelve".