214028639 has 12 divisors (see below), whose sum is σ = 244085352. Its totient is φ = 186106800.

The previous prime is 214028579. The next prime is 214028641. The reversal of 214028639 is 936820412.

It is not a de Polignac number, because 214028639 - 2¹⁶ = 213963103 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214028599 and 214028608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214028039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12572 + ... + 24209.

It is an arithmetic number, because the mean of its divisors is an integer number (20340446).

Almost surely, 2^214028639 is an apocalyptic number.

214028639 is a deficient number, since it is larger than the sum of its proper divisors (30056713).

214028639 is a wasteful number, since it uses less digits than its factorization.

214028639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36838 (or 36815 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 214028639 is about 14629.7176664487. The cubic root of 214028639 is about 598.1690843368.

The spelling of 214028639 in words is "two hundred fourteen million, twenty-eight thousand, six hundred thirty-nine".