16231552 has 32 divisors (see below), whose sum is σ = 32567580. Its totient is φ = 8057856.

The previous prime is 16231547. The next prime is 16231559. The reversal of 16231552 is 25513261.

16231552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 11669056 + 4562496 = 3416^2 + 2136^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (16231559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21778 + ... + 22510.

Almost surely, 2^16231552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16231552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16283790).

16231552 is an abundant number, since it is smaller than the sum of its proper divisors (16336028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16231552 is an equidigital number, since it uses as much as digits as its factorization.

16231552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 908 counting only the distinct ones).

The product of its digits is 1800, while the sum is 25.

The square root of 16231552 is about 4028.8400315724. The cubic root of 16231552 is about 253.1939645852.

The spelling of 16231552 in words is "sixteen million, two hundred thirty-one thousand, five hundred fifty-two".