214531604 has 18 divisors (see below), whose sum is σ = 436725450. Its totient is φ = 91942032.

The previous prime is 214531573. The next prime is 214531607. The reversal of 214531604 is 406135412.

214531604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 119858704 + 94672900 = 10948^2 + 9730^2 .

It is a super-2 number, since 2×214531604² = 92047618229625632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214531607) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 547079 + ... + 547470.

It is an arithmetic number, because the mean of its divisors is an integer number (24262525).

Almost surely, 2^214531604 is an apocalyptic number.

It is an amenable number.

214531604 is an abundant number, since it is smaller than the sum of its proper divisors (222193846).

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

214531604 is a wasteful number, since it uses less digits than its factorization.

214531604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094567 (or 1094558 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 214531604 is about 14646.8974189075. The cubic root of 214531604 is about 598.6372814140.

The spelling of 214531604 in words is "two hundred fourteen million, five hundred thirty-one thousand, six hundred four".