16212690 has 128 divisors (see below), whose sum is σ = 48384000. Its totient is φ = 3836160.

The previous prime is 16212689. The next prime is 16212739. The reversal of 16212690 is 9621261.

It is a super-2 number, since 2×16212690² = 525702634072200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 108736 + ... + 108884.

It is an arithmetic number, because the mean of its divisors is an integer number (378000).

Almost surely, 2^16212690 is an apocalyptic number.

16212690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16212690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24192000).

16212690 is an abundant number, since it is smaller than the sum of its proper divisors (32171310).

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

16212690 is a wasteful number, since it uses less digits than its factorization.

16212690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 16212690 is about 4026.4984788275. The cubic root of 16212690 is about 253.0958512388.

The spelling of 16212690 in words is "sixteen million, two hundred twelve thousand, six hundred ninety".