77794380 has 72 divisors (see below), whose sum is σ = 249867072. Its totient is φ = 19524096.

The previous prime is 77794361. The next prime is 77794393. The reversal of 77794380 is 8349777.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9652 + ... + 15771.

It is an arithmetic number, because the mean of its divisors is an integer number (3470376).

Almost surely, 2^77794380 is an apocalyptic number.

It is an amenable number.

77794380 is an abundant number, since it is smaller than the sum of its proper divisors (172072692).

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

77794380 is a wasteful number, since it uses less digits than its factorization.

77794380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25455 (or 25450 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 77794380 is about 8820.1122441837. The cubic root of 77794380 is about 426.8900915872.

The spelling of 77794380 in words is "seventy-seven million, seven hundred ninety-four thousand, three hundred eighty".