210545136 has 80 divisors (see below), whose sum is σ = 639914400. Its totient is φ = 66051072.

The previous prime is 210545123. The next prime is 210545161. The reversal of 210545136 is 631545012.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6991 + ... + 21678.

It is an arithmetic number, because the mean of its divisors is an integer number (7998930).

Almost surely, 2^210545136 is an apocalyptic number.

It is an amenable number.

210545136 is an abundant number, since it is smaller than the sum of its proper divisors (429369264).

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

210545136 is a wasteful number, since it uses less digits than its factorization.

210545136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28703 (or 28691 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 210545136 is about 14510.1735344551. The cubic root of 210545136 is about 594.9060756104.

It can be divided in two parts, 210545 and 136, that added together give a square (210681 = 459²).

The spelling of 210545136 in words is "two hundred ten million, five hundred forty-five thousand, one hundred thirty-six".