214428220 has 24 divisors (see below), whose sum is σ = 450604224. Its totient is φ = 85713216.

The previous prime is 214428169. The next prime is 214428257. The reversal of 214428220 is 22824412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38662 + ... + 43858.

It is an arithmetic number, because the mean of its divisors is an integer number (18775176).

Almost surely, 2^214428220 is an apocalyptic number.

214428220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214428220 is an abundant number, since it is smaller than the sum of its proper divisors (236176004).

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

214428220 is a wasteful number, since it uses less digits than its factorization.

214428220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7269 (or 7267 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 214428220 is about 14643.3677820370. The cubic root of 214428220 is about 598.5411037260.

The spelling of 214428220 in words is "two hundred fourteen million, four hundred twenty-eight thousand, two hundred twenty".