77322900 has 72 divisors (see below), whose sum is σ = 224645344. Its totient is φ = 20534400.

The previous prime is 77322899. The next prime is 77322907. The reversal of 77322900 is 922377.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77322907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111555 + ... + 112245.

Almost surely, 2^77322900 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 77322900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112322672).

77322900 is an abundant number, since it is smaller than the sum of its proper divisors (147322444).

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

77322900 is a wasteful number, since it uses less digits than its factorization.

77322900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 77322900 is about 8793.3440737867. The cubic root of 77322900 is about 426.0259412447.

The spelling of 77322900 in words is "seventy-seven million, three hundred twenty-two thousand, nine hundred".