15226989 has 8 divisors (see below), whose sum is σ = 21185472. Its totient is φ = 9709920.

The previous prime is 15226927. The next prime is 15227021. The reversal of 15226989 is 98962251.

15226989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a de Polignac number, because none of the positive numbers 2^k-15226989 is a prime.

It is a super-2 number, since 2×15226989² = 463722388012242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15226989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15226909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110272 + ... + 110409.

It is an arithmetic number, because the mean of its divisors is an integer number (2648184).

Almost surely, 2^15226989 is an apocalyptic number.

It is an amenable number.

15226989 is a deficient number, since it is larger than the sum of its proper divisors (5958483).

15226989 is a wasteful number, since it uses less digits than its factorization.

15226989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220707.

The product of its digits is 77760, while the sum is 42.

The square root of 15226989 is about 3902.1774690549. The cubic root of 15226989 is about 247.8589913367.

The spelling of 15226989 in words is "fifteen million, two hundred twenty-six thousand, nine hundred eighty-nine".