12161490 has 64 divisors (see below), whose sum is σ = 32192640. Its totient is φ = 2915840.

The previous prime is 12161489. The next prime is 12161521. The reversal of 12161490 is 9416121.

12161490 = T₁₅₆ + T₁₅₇ + ... + T₄₂₄.

12161490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12161490.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45076 + ... + 45344.

It is an arithmetic number, because the mean of its divisors is an integer number (503010).

Almost surely, 2^12161490 is an apocalyptic number.

12161490 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 12161490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16096320).

12161490 is an abundant number, since it is smaller than the sum of its proper divisors (20031150).

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

12161490 is a wasteful number, since it uses less digits than its factorization.

12161490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 12161490 is about 3487.3327916905. The cubic root of 12161490 is about 229.9652751609.

The spelling of 12161490 in words is "twelve million, one hundred sixty-one thousand, four hundred ninety".