21495152 has 80 divisors (see below), whose sum is σ = 50663424. Its totient is φ = 8640000.

The previous prime is 21495151. The next prime is 21495161. The reversal of 21495152 is 25159412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21495151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142277 + ... + 142427.

Almost surely, 2^21495152 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 21495152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25331712).

21495152 is an abundant number, since it is smaller than the sum of its proper divisors (29168272).

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

21495152 is a wasteful number, since it uses less digits than its factorization.

21495152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 232 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 21495152 is about 4636.2864449902. The cubic root of 21495152 is about 278.0439866220.

The spelling of 21495152 in words is "twenty-one million, four hundred ninety-five thousand, one hundred fifty-two".