15145990 has 8 divisors (see below), whose sum is σ = 27262800. Its totient is φ = 6058392.

The previous prime is 15145981. The next prime is 15146003. The reversal of 15145990 is 9954151.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 757290 + ... + 757309.

It is an arithmetic number, because the mean of its divisors is an integer number (3407850).

Almost surely, 2^15145990 is an apocalyptic number.

15145990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15145990 is a deficient number, since it is larger than the sum of its proper divisors (12116810).

15145990 is a wasteful number, since it uses less digits than its factorization.

15145990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1514606.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 15145990 is about 3891.7849375319. The cubic root of 15145990 is about 247.4187196965.

The spelling of 15145990 in words is "fifteen million, one hundred forty-five thousand, nine hundred ninety".