15120946 has 4 divisors (see below), whose sum is σ = 22681422. Its totient is φ = 7560472.

The previous prime is 15120943. The next prime is 15120947. The reversal of 15120946 is 64902151.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64902151 = 6073 ⋅10687.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 3294225 = 3439^2 + 1815^2 .

It is not an unprimeable number, because it can be changed into a prime (15120943) by changing a digit.

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, 3780235 + ... + 3780238.

Almost surely, 2^15120946 is an apocalyptic number.

15120946 is a deficient number, since it is larger than the sum of its proper divisors (7560476).

15120946 is an equidigital number, since it uses as much as digits as its factorization.

15120946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7560475.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 15120946 is about 3888.5660596163. The cubic root of 15120946 is about 247.2822749390.

The spelling of 15120946 in words is "fifteen million, one hundred twenty thousand, nine hundred forty-six".