214999776 has 72 divisors (see below), whose sum is σ = 621817560. Its totient is φ = 70446336.

The previous prime is 214999769. The next prime is 214999793. The reversal of 214999776 is 677999412.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10666 + ... + 23318.

It is an arithmetic number, because the mean of its divisors is an integer number (8636355).

Almost surely, 2^214999776 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214999776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310908780).

214999776 is an abundant number, since it is smaller than the sum of its proper divisors (406817784).

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

214999776 is a wasteful number, since it uses less digits than its factorization.

214999776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12728 (or 12717 counting only the distinct ones).

The product of its digits is 1714608, while the sum is 54.

The square root of 214999776 is about 14662.8706602766. The cubic root of 214999776 is about 599.0724334394.

The spelling of 214999776 in words is "two hundred fourteen million, nine hundred ninety-nine thousand, seven hundred seventy-six".