787981600 has 144 divisors (see below), whose sum is σ = 2258480448. Its totient is φ = 262794240.

The previous prime is 787981567. The next prime is 787981673. The reversal of 787981600 is 6189787.

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, 205299 + ... + 209101.

It is an arithmetic number, because the mean of its divisors is an integer number (15683892).

Almost surely, 2^787981600 is an apocalyptic number.

787981600 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 787981600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1129240224).

787981600 is an abundant number, since it is smaller than the sum of its proper divisors (1470498848).

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

787981600 is a wasteful number, since it uses less digits than its factorization.

787981600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3867 (or 3854 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 787981600 is about 28071.0099568933. The cubic root of 787981600 is about 923.6455853582.

The spelling of 787981600 in words is "seven hundred eighty-seven million, nine hundred eighty-one thousand, six hundred".