215149914 has 24 divisors (see below), whose sum is σ = 532752480. Its totient is φ = 61471368.

The previous prime is 215149903. The next prime is 215149967. The reversal of 215149914 is 419941512.

It is a happy number.

215149914 is a `hidden beast` number, since 2 + 151 + 499 + 14 = 666.

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, 853644 + ... + 853895.

It is an arithmetic number, because the mean of its divisors is an integer number (22198020).

Almost surely, 2^215149914 is an apocalyptic number.

215149914 is an abundant number, since it is smaller than the sum of its proper divisors (317602566).

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

215149914 is a wasteful number, since it uses less digits than its factorization.

215149914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707554 (or 1707551 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 215149914 is about 14667.9894327750. The cubic root of 215149914 is about 599.2118484820.

The spelling of 215149914 in words is "two hundred fifteen million, one hundred forty-nine thousand, nine hundred fourteen".