215426452 has 6 divisors (see below), whose sum is σ = 376996298. Its totient is φ = 107713224.

The previous prime is 215426447. The next prime is 215426461. The reversal of 215426452 is 254624512.

215426452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 123343236 + 92083216 = 11106^2 + 9596^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26928303 + ... + 26928310.

Almost surely, 2^215426452 is an apocalyptic number.

It is an amenable number.

215426452 is a deficient number, since it is larger than the sum of its proper divisors (161569846).

215426452 is a wasteful number, since it uses less digits than its factorization.

215426452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53856617 (or 53856615 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 215426452 is about 14677.4129873081. The cubic root of 215426452 is about 599.4684662960.

The spelling of 215426452 in words is "two hundred fifteen million, four hundred twenty-six thousand, four hundred fifty-two".