438287892 has 48 divisors (see below), whose sum is σ = 1183580160. Its totient is φ = 123638112.

The previous prime is 438287881. The next prime is 438287893. The reversal of 438287892 is 298782834.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438287893) 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, 26388 + ... + 39659.

It is an arithmetic number, because the mean of its divisors is an integer number (24657920).

Almost surely, 2^438287892 is an apocalyptic number.

438287892 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

438287892 is an abundant number, since it is smaller than the sum of its proper divisors (745292268).

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

438287892 is a wasteful number, since it uses less digits than its factorization.

438287892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66140 (or 66138 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 438287892 is about 20935.3264125497. The cubic root of 438287892 is about 759.6026847549.

The spelling of 438287892 in words is "four hundred thirty-eight million, two hundred eighty-seven thousand, eight hundred ninety-two".