20755630 has 16 divisors (see below), whose sum is σ = 42697440. Its totient is φ = 7116192.

The previous prime is 20755613. The next prime is 20755649. The reversal of 20755630 is 3655702.

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, 148185 + ... + 148324.

It is an arithmetic number, because the mean of its divisors is an integer number (2668590).

Almost surely, 2^20755630 is an apocalyptic number.

20755630 is an abundant number, since it is smaller than the sum of its proper divisors (21941810).

20755630 is a wasteful number, since it uses less digits than its factorization.

20755630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296523.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 20755630 is about 4555.8347204437. The cubic root of 20755630 is about 274.8180835429.

The spelling of 20755630 in words is "twenty million, seven hundred fifty-five thousand, six hundred thirty".