20155132 has 48 divisors (see below), whose sum is σ = 39184992. Its totient is φ = 9031680.

The previous prime is 20155129. The next prime is 20155147. The reversal of 20155132 is 23155102.

It is a super-3 number, since 3×20155132³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178308 + ... + 178420.

It is an arithmetic number, because the mean of its divisors is an integer number (816354).

Almost surely, 2^20155132 is an apocalyptic number.

It is an amenable number.

20155132 is a deficient number, since it is larger than the sum of its proper divisors (19029860).

20155132 is a wasteful number, since it uses less digits than its factorization.

20155132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 20155132 is about 4489.4467365144. The cubic root of 20155132 is about 272.1417765781.

The spelling of 20155132 in words is "twenty million, one hundred fifty-five thousand, one hundred thirty-two".