20151532 has 24 divisors (see below), whose sum is σ = 37001664. Its totient is φ = 9591552.

The previous prime is 20151529. The next prime is 20151539. The reversal of 20151532 is 23515102.

It is not an unprimeable number, because it can be changed into a prime (20151539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5508 + ... + 8404.

It is an arithmetic number, because the mean of its divisors is an integer number (1541736).

Almost surely, 2^20151532 is an apocalyptic number.

It is an amenable number.

20151532 is a deficient number, since it is larger than the sum of its proper divisors (16850132).

20151532 is a wasteful number, since it uses less digits than its factorization.

20151532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2985 (or 2983 counting only the distinct ones).

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

The square root of 20151532 is about 4489.0457783364. The cubic root of 20151532 is about 272.1255727856.

Adding to 20151532 its reverse (23515102), we get a palindrome (43666634).

The spelling of 20151532 in words is "twenty million, one hundred fifty-one thousand, five hundred thirty-two".