787131492 has 48 divisors (see below), whose sum is σ = 2141865600. Its totient is φ = 224893536.

The previous prime is 787131473. The next prime is 787131493. The reversal of 787131492 is 294131787.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (787131493) 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, 91503 + ... + 99734.

It is an arithmetic number, because the mean of its divisors is an integer number (44622200).

Almost surely, 2^787131492 is an apocalyptic number.

It is an amenable number.

787131492 is an abundant number, since it is smaller than the sum of its proper divisors (1354734108).

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

787131492 is a wasteful number, since it uses less digits than its factorization.

787131492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191265 (or 191249 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 787131492 is about 28055.8637721244. The cubic root of 787131492 is about 923.3133098164.

The spelling of 787131492 in words is "seven hundred eighty-seven million, one hundred thirty-one thousand, four hundred ninety-two".