20154532 has 12 divisors (see below), whose sum is σ = 36804096. Its totient is φ = 9639080.

The previous prime is 20154527. The next prime is 20154569. The reversal of 20154532 is 23545102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109444 + ... + 109627.

It is an arithmetic number, because the mean of its divisors is an integer number (3067008).

Almost surely, 2^20154532 is an apocalyptic number.

It is an amenable number.

20154532 is a deficient number, since it is larger than the sum of its proper divisors (16649564).

20154532 is a wasteful number, since it uses less digits than its factorization.

20154532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219098 (or 219096 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20154532 is about 4489.3799126383. The cubic root of 20154532 is about 272.1390760800.

Adding to 20154532 its reverse (23545102), we get a palindrome (43699634).

The spelling of 20154532 in words is "twenty million, one hundred fifty-four thousand, five hundred thirty-two".