213257026 has 16 divisors (see below), whose sum is σ = 337032000. Its totient is φ = 100923408.

The previous prime is 213257021. The next prime is 213257059. The reversal of 213257026 is 620752312.

It is a junction number, because it is equal to n+sod(n) for n = 213256985 and 213257003.

It is not an unprimeable number, because it can be changed into a prime (213257021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57051 + ... + 60673.

It is an arithmetic number, because the mean of its divisors is an integer number (21064500).

Almost surely, 2^213257026 is an apocalyptic number.

213257026 is a deficient number, since it is larger than the sum of its proper divisors (123774974).

213257026 is a wasteful number, since it uses less digits than its factorization.

213257026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5193.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 213257026 is about 14603.3224301869. The cubic root of 213257026 is about 597.4493818688.

The spelling of 213257026 in words is "two hundred thirteen million, two hundred fifty-seven thousand, twenty-six".