213555036 has 24 divisors (see below), whose sum is σ = 498549520. Its totient is φ = 71148672.

The previous prime is 213555031. The next prime is 213555053. The reversal of 213555036 is 630555312.

It is a super-2 number, since 2×213555036² = 91211506801922592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213554994 and 213555012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213555031) 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, 31170 + ... + 37398.

Almost surely, 2^213555036 is an apocalyptic number.

It is an amenable number.

213555036 is an abundant number, since it is smaller than the sum of its proper divisors (284994484).

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

213555036 is a wasteful number, since it uses less digits than its factorization.

213555036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093 (or 9091 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The square root of 213555036 is about 14613.5223679988. The cubic root of 213555036 is about 597.7275485845.

The spelling of 213555036 in words is "two hundred thirteen million, five hundred fifty-five thousand, thirty-six".