219264942 has 16 divisors (see below), whose sum is σ = 472263120. Its totient is φ = 67466112.

The previous prime is 219264919. The next prime is 219264967. The reversal of 219264942 is 249462912.

It is a super-2 number, since 2×219264942² = 96154229580526728, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 219264942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1405467 + ... + 1405622.

It is an arithmetic number, because the mean of its divisors is an integer number (29516445).

Almost surely, 2^219264942 is an apocalyptic number.

219264942 is an abundant number, since it is smaller than the sum of its proper divisors (252998178).

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

219264942 is a wasteful number, since it uses less digits than its factorization.

219264942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2811107.

The product of its digits is 62208, while the sum is 39.

The square root of 219264942 is about 14807.5974418540. The cubic root of 219264942 is about 603.0079892453.

The spelling of 219264942 in words is "two hundred nineteen million, two hundred sixty-four thousand, nine hundred forty-two".