16251612 has 48 divisors (see below), whose sum is σ = 42994560. Its totient is φ = 4736448.

The previous prime is 16251577. The next prime is 16251619. The reversal of 16251612 is 21615261.

It is a super-2 number, since 2×16251612² = 528229785197088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16251619) 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, 223 + ... + 5705.

It is an arithmetic number, because the mean of its divisors is an integer number (895720).

Almost surely, 2^16251612 is an apocalyptic number.

16251612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16251612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21497280).

16251612 is an abundant number, since it is smaller than the sum of its proper divisors (26742948).

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

16251612 is a wasteful number, since it uses less digits than its factorization.

16251612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5522 (or 5520 counting only the distinct ones).

The product of its digits is 720, while the sum is 24.

The square root of 16251612 is about 4031.3288131831. The cubic root of 16251612 is about 253.2982261292.

Adding to 16251612 its reverse (21615261), we get a palindrome (37866873).

The spelling of 16251612 in words is "sixteen million, two hundred fifty-one thousand, six hundred twelve".