20432755 has 12 divisors (see below), whose sum is σ = 28522800. Its totient is φ = 14010864.

The previous prime is 20432749. The next prime is 20432761. The reversal of 20432755 is 55723402.

It is an interprime number because it is at equal distance from previous prime (20432749) and next prime (20432761).

It is not a de Polignac number, because 20432755 - 2¹⁹ = 19908467 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41455 + ... + 41944.

It is an arithmetic number, because the mean of its divisors is an integer number (2376900).

Almost surely, 2^20432755 is an apocalyptic number.

20432755 is a deficient number, since it is larger than the sum of its proper divisors (8090045).

20432755 is an equidigital number, since it uses as much as digits as its factorization.

20432755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83418 (or 83411 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 28.

The square root of 20432755 is about 4520.2605013428. The cubic root of 20432755 is about 273.3856045514.

The spelling of 20432755 in words is "twenty million, four hundred thirty-two thousand, seven hundred fifty-five".