215026530 has 16 divisors (see below), whose sum is σ = 516063744. Its totient is φ = 57340400.

The previous prime is 215026507. The next prime is 215026543. The reversal of 215026530 is 35620512.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 215026530.

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, 3583746 + ... + 3583805.

It is an arithmetic number, because the mean of its divisors is an integer number (32253984).

Almost surely, 2^215026530 is an apocalyptic number.

215026530 is an abundant number, since it is smaller than the sum of its proper divisors (301037214).

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

215026530 is a wasteful number, since it uses less digits than its factorization.

215026530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7167561.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 215026530 is about 14663.7829362003. The cubic root of 215026530 is about 599.0972814019.

It can be divided in two parts, 2150 and 26530, that added together give a triangular number (28680 = T₂₃₉).

The spelling of 215026530 in words is "two hundred fifteen million, twenty-six thousand, five hundred thirty".