214169640 has 64 divisors (see below), whose sum is σ = 664675200. Its totient is φ = 55141632.

The previous prime is 214169617. The next prime is 214169677. The reversal of 214169640 is 46961412.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27292 + ... + 34251.

It is an arithmetic number, because the mean of its divisors is an integer number (10385550).

Almost surely, 2^214169640 is an apocalyptic number.

214169640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214169640 is an abundant number, since it is smaller than the sum of its proper divisors (450505560).

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

214169640 is a wasteful number, since it uses less digits than its factorization.

214169640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61586 (or 61582 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 214169640 is about 14634.5358655476. The cubic root of 214169640 is about 598.3004124382.

The spelling of 214169640 in words is "two hundred fourteen million, one hundred sixty-nine thousand, six hundred forty".