427420188 has 144 divisors (see below), whose sum is σ = 1272450816. Its totient is φ = 119715840.

The previous prime is 427420177. The next prime is 427420193. The reversal of 427420188 is 881024724.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245770 + ... + 247502.

It is an arithmetic number, because the mean of its divisors is an integer number (8836464).

Almost surely, 2^427420188 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427420188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (636225408).

427420188 is an abundant number, since it is smaller than the sum of its proper divisors (845030628).

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

427420188 is a wasteful number, since it uses less digits than its factorization.

427420188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804 (or 1799 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 427420188 is about 20674.1429810283. The cubic root of 427420188 is about 753.2717441665.

The spelling of 427420188 in words is "four hundred twenty-seven million, four hundred twenty thousand, one hundred eighty-eight".