12652290 has 144 divisors (see below), whose sum is σ = 40547520. Its totient is φ = 2721600.

The previous prime is 12652279. The next prime is 12652303. The reversal of 12652290 is 9225621.

12652290 = T₁₉₁ + T₁₉₂ + ... + T₄₃₅.

12652290 is a `hidden beast` number, since 1 + 2 + 652 + 2 + 9 + 0 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 83715 + ... + 83865.

It is an arithmetic number, because the mean of its divisors is an integer number (281580).

Almost surely, 2^12652290 is an apocalyptic number.

12652290 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 12652290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20273760).

12652290 is an abundant number, since it is smaller than the sum of its proper divisors (27895230).

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

12652290 is a wasteful number, since it uses less digits than its factorization.

12652290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 187 counting only the distinct ones).

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

The square root of 12652290 is about 3557.0057632790. The cubic root of 12652290 is about 233.0181299480.

The spelling of 12652290 in words is "twelve million, six hundred fifty-two thousand, two hundred ninety".