428432214 has 64 divisors (see below), whose sum is σ = 1019215872. Its totient is φ = 117482400.

The previous prime is 428432161. The next prime is 428432233. The reversal of 428432214 is 412234824.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 164059 + ... + 166649.

It is an arithmetic number, because the mean of its divisors is an integer number (15925248).

Almost surely, 2^428432214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428432214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (509607936).

428432214 is an abundant number, since it is smaller than the sum of its proper divisors (590783658).

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

428432214 is a wasteful number, since it uses less digits than its factorization.

428432214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761.

The product of its digits is 12288, while the sum is 30.

The square root of 428432214 is about 20698.6041558362. The cubic root of 428432214 is about 753.8657963672.

The spelling of 428432214 in words is "four hundred twenty-eight million, four hundred thirty-two thousand, two hundred fourteen".