15145389 has 24 divisors (see below), whose sum is σ = 25114752. Its totient is φ = 8615520.

The previous prime is 15145379. The next prime is 15145399. The reversal of 15145389 is 98354151.

It is an interprime number because it is at equal distance from previous prime (15145379) and next prime (15145399).

It is not a de Polignac number, because 15145389 - 2⁵ = 15145357 is a prime.

It is a super-2 number, since 2×15145389² = 458765615922642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15145349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19207 + ... + 19979.

It is an arithmetic number, because the mean of its divisors is an integer number (1046448).

Almost surely, 2^15145389 is an apocalyptic number.

It is an amenable number.

15145389 is a deficient number, since it is larger than the sum of its proper divisors (9969363).

15145389 is a wasteful number, since it uses less digits than its factorization.

15145389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097 (or 1094 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 15145389 is about 3891.7077228384. The cubic root of 15145389 is about 247.4154470895.

It can be divided in two parts, 1514 and 5389, that added together give a triangular number (6903 = T₁₁₇).

The spelling of 15145389 in words is "fifteen million, one hundred forty-five thousand, three hundred eighty-nine".