213779088 has 50 divisors (see below), whose sum is σ = 618742454. Its totient is φ = 71259264.

The previous prime is 213779053. The next prime is 213779099. The reversal of 213779088 is 880977312.

It can be written as a sum of positive squares in only one way, i.e., 179345664 + 34433424 = 13392^2 + 5868^2 .

It is a super-2 number, since 2×213779088² = 91402996932223488, which contains 22 as substring.

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 9 ways as a sum of consecutive naturals, for example, 81181 + ... + 83772.

Almost surely, 2^213779088 is an apocalyptic number.

It is an amenable number.

213779088 is an abundant number, since it is smaller than the sum of its proper divisors (404963366).

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

213779088 is a wasteful number, since it uses less digits than its factorization.

213779088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164973 (or 164958 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The square root of 213779088 is about 14621.1862719822. The cubic root of 213779088 is about 597.9365114941.

It can be divided in two parts, 2137 and 79088, that added together give a square (81225 = 285²).

The spelling of 213779088 in words is "two hundred thirteen million, seven hundred seventy-nine thousand, eighty-eight".