20755230 has 16 divisors (see below), whose sum is σ = 49812624. Its totient is φ = 5534720.

The previous prime is 20755211. The next prime is 20755297. The reversal of 20755230 is 3255702.

It is a self number, because there is not a number n which added to its sum of digits gives 20755230.

It is a congruent number.

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, 345891 + ... + 345950.

It is an arithmetic number, because the mean of its divisors is an integer number (3113289).

Almost surely, 2^20755230 is an apocalyptic number.

20755230 is an abundant number, since it is smaller than the sum of its proper divisors (29057394).

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

20755230 is a wasteful number, since it uses less digits than its factorization.

20755230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691851.

The product of its (nonzero) digits is 2100, while the sum is 24.

The square root of 20755230 is about 4555.7908204833. The cubic root of 20755230 is about 274.8163181113.

The spelling of 20755230 in words is "twenty million, seven hundred fifty-five thousand, two hundred thirty".