77326480 has 80 divisors (see below), whose sum is σ = 224164224. Its totient is φ = 24099840.

The previous prime is 77326477. The next prime is 77326481. The reversal of 77326480 is 8462377.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (77326481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117 + ... + 12436.

Almost surely, 2^77326480 is an apocalyptic number.

77326480 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77326480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112082112).

77326480 is an abundant number, since it is smaller than the sum of its proper divisors (146837744).

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

77326480 is a wasteful number, since it uses less digits than its factorization.

77326480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12584 (or 12578 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 77326480 is about 8793.5476344875. The cubic root of 77326480 is about 426.0325160512.

The spelling of 77326480 in words is "seventy-seven million, three hundred twenty-six thousand, four hundred eighty".