213263026 has 8 divisors (see below), whose sum is σ = 320718060. Its totient is φ = 106357008.

The previous prime is 213263021. The next prime is 213263027. The reversal of 213263026 is 620362312.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 213014025 + 249001 = 14595^2 + 499^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×213263026² = 90962236517353352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213263021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136281 + ... + 137836.

Almost surely, 2^213263026 is an apocalyptic number.

213263026 is a deficient number, since it is larger than the sum of its proper divisors (107455034).

213263026 is a wasteful number, since it uses less digits than its factorization.

213263026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274508.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 213263026 is about 14603.5278614450. The cubic root of 213263026 is about 597.4549849084.

The spelling of 213263026 in words is "two hundred thirteen million, two hundred sixty-three thousand, twenty-six".