16261630 has 64 divisors (see below), whose sum is σ = 37324800. Its totient is φ = 5056800.

The previous prime is 16261607. The next prime is 16261633. The reversal of 16261630 is 3616261.

It is a super-2 number, since 2×16261630² = 528881220513800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16261595 and 16261604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16261633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37515 + ... + 37945.

It is an arithmetic number, because the mean of its divisors is an integer number (583200).

Almost surely, 2^16261630 is an apocalyptic number.

16261630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16261630 is an abundant number, since it is smaller than the sum of its proper divisors (21063170).

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

16261630 is a wasteful number, since it uses less digits than its factorization.

16261630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16261630 is about 4032.5711401040. The cubic root of 16261630 is about 253.3502624113.

Adding to 16261630 its reverse (3616261), we get a palindrome (19877891).

The spelling of 16261630 in words is "sixteen million, two hundred sixty-one thousand, six hundred thirty".