213863026 has 16 divisors (see below), whose sum is σ = 365793624. Its totient is φ = 92899584.

The previous prime is 213862991. The next prime is 213863051. The reversal of 213863026 is 620368312.

It can be written as a sum of positive squares in 4 ways, for example, as 138086001 + 75777025 = 11751^2 + 8705^2 .

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, 241485 + ... + 242368.

Almost surely, 2^213863026 is an apocalyptic number.

213863026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

213863026 is a deficient number, since it is larger than the sum of its proper divisors (151930598).

213863026 is a wasteful number, since it uses less digits than its factorization.

213863026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483885.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 213863026 is about 14624.0564140050. The cubic root of 213863026 is about 598.0147589785.

The spelling of 213863026 in words is "two hundred thirteen million, eight hundred sixty-three thousand, twenty-six".