427844172 has 48 divisors (see below), whose sum is σ = 1171761920. Its totient is φ = 118936512.

The previous prime is 427844161. The next prime is 427844173. The reversal of 427844172 is 271448724.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 427844172.

It is not an unprimeable number, because it can be changed into a prime (427844173) 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, 65722 + ... + 71937.

Almost surely, 2^427844172 is an apocalyptic number.

427844172 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

427844172 is an abundant number, since it is smaller than the sum of its proper divisors (743917748).

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

427844172 is a wasteful number, since it uses less digits than its factorization.

427844172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137710 (or 137708 counting only the distinct ones).

The product of its digits is 100352, while the sum is 39.

The square root of 427844172 is about 20684.3944073787. The cubic root of 427844172 is about 753.5207338272.

The spelling of 427844172 in words is "four hundred twenty-seven million, eight hundred forty-four thousand, one hundred seventy-two".