874138782 has 32 divisors (see below), whose sum is σ = 1990137600. Its totient is φ = 253373120.

The previous prime is 874138781. The next prime is 874138799. The reversal of 874138782 is 287831478.

It is a happy number.

It is a super-2 number, since 2×874138782² = 1528237220392887048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (874138781) 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, 286407 + ... + 289442.

It is an arithmetic number, because the mean of its divisors is an integer number (62191800).

Almost surely, 2^874138782 is an apocalyptic number.

874138782 is an abundant number, since it is smaller than the sum of its proper divisors (1115998818).

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

874138782 is a wasteful number, since it uses less digits than its factorization.

874138782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575888.

The product of its digits is 602112, while the sum is 48.

The square root of 874138782 is about 29565.8380906072. The cubic root of 874138782 is about 956.1516882312.

It can be divided in two parts, 874 and 138782, that added together give a triangular number (139656 = T₅₂₈).

The spelling of 874138782 in words is "eight hundred seventy-four million, one hundred thirty-eight thousand, seven hundred eighty-two".