214190640 has 60 divisors (see below), whose sum is σ = 719325984. Its totient is φ = 57117312.

The previous prime is 214190623. The next prime is 214190653. The reversal of 214190640 is 46091412.

214190640 is a `hidden beast` number, since 2 + 1 + 4 + 19 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148024 + ... + 149463.

Almost surely, 2^214190640 is an apocalyptic number.

214190640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214190640 is an abundant number, since it is smaller than the sum of its proper divisors (505135344).

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

214190640 is a wasteful number, since it uses less digits than its factorization.

214190640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297506 (or 297497 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 214190640 is about 14635.2533288632. The cubic root of 214190640 is about 598.3199668718.

The spelling of 214190640 in words is "two hundred fourteen million, one hundred ninety thousand, six hundred forty".