15149894 has 4 divisors (see below), whose sum is σ = 22724844. Its totient is φ = 7574946.

The previous prime is 15149887. The next prime is 15149969. The reversal of 15149894 is 49894151.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×15149894² = 459038576422472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3787472 + ... + 3787475.

It is an arithmetic number, because the mean of its divisors is an integer number (5681211).

Almost surely, 2^15149894 is an apocalyptic number.

15149894 is a deficient number, since it is larger than the sum of its proper divisors (7574950).

15149894 is an equidigital number, since it uses as much as digits as its factorization.

15149894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7574949.

The product of its digits is 51840, while the sum is 41.

The square root of 15149894 is about 3892.2864745545. The cubic root of 15149894 is about 247.4399759212.

The spelling of 15149894 in words is "fifteen million, one hundred forty-nine thousand, eight hundred ninety-four".