12522690 has 48 divisors (see below), whose sum is σ = 33107256. Its totient is φ = 3283200.

The previous prime is 12522677. The next prime is 12522701. The reversal of 12522690 is 9622521.

12522690 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 4 ways, for example, as 7144929 + 5377761 = 2673^2 + 2319^2 .

It is a super-2 number, since 2×12522690² = 313635529672200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4350 + ... + 6630.

Almost surely, 2^12522690 is an apocalyptic number.

12522690 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 12522690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16553628).

12522690 is an abundant number, since it is smaller than the sum of its proper divisors (20584566).

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

12522690 is a wasteful number, since it uses less digits than its factorization.

12522690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355 (or 2352 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 12522690 is about 3538.7413016495. The cubic root of 12522690 is about 232.2197803348.

It can be divided in two parts, 125226 and 90, that added together give a square (125316 = 354²).

The spelling of 12522690 in words is "twelve million, five hundred twenty-two thousand, six hundred ninety".