210255430 has 32 divisors (see below), whose sum is σ = 471847680. Its totient is φ = 65533920.

The previous prime is 210255427. The next prime is 210255433. The reversal of 210255430 is 34552012.

It is an interprime number because it is at equal distance from previous prime (210255427) and next prime (210255433).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210255433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135760 + ... + 137299.

It is an arithmetic number, because the mean of its divisors is an integer number (14745240).

Almost surely, 2^210255430 is an apocalyptic number.

210255430 is an abundant number, since it is smaller than the sum of its proper divisors (261592250).

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

210255430 is a wasteful number, since it uses less digits than its factorization.

210255430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273084.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 210255430 is about 14500.1872401704. The cubic root of 210255430 is about 594.6330906464.

The spelling of 210255430 in words is "two hundred ten million, two hundred fifty-five thousand, four hundred thirty".