77494320 has 100 divisors (see below), whose sum is σ = 269171760. Its totient is φ = 20663424.

The previous prime is 77494309. The next prime is 77494343. The reversal of 77494320 is 2349477.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 501 + ... + 12459.

Almost surely, 2^77494320 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 77494320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134585880).

77494320 is an abundant number, since it is smaller than the sum of its proper divisors (191677440).

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

77494320 is a wasteful number, since it uses less digits than its factorization.

77494320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11984 (or 11969 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 77494320 is about 8803.0858225965. The cubic root of 77494320 is about 426.3405331101.

The spelling of 77494320 in words is "seventy-seven million, four hundred ninety-four thousand, three hundred twenty".