15348981 has 16 divisors (see below), whose sum is σ = 21490560. Its totient is φ = 9725760.

The previous prime is 15348973. The next prime is 15349001. The reversal of 15348981 is 18984351.

15348981 = T₃₁₈ + T₃₁₉ + ... + T₄₉₈.

It is not a de Polignac number, because 15348981 - 2³ = 15348973 is a prime.

It is a super-2 number, since 2×15348981² = 471182435476722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15348911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11875 + ... + 13103.

It is an arithmetic number, because the mean of its divisors is an integer number (1343160).

Almost surely, 2^15348981 is an apocalyptic number.

It is an amenable number.

15348981 is a deficient number, since it is larger than the sum of its proper divisors (6141579).

15348981 is a wasteful number, since it uses less digits than its factorization.

15348981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436.

The product of its digits is 34560, while the sum is 39.

The square root of 15348981 is about 3917.7775587698. Note that the first 3 decimals coincide. The cubic root of 15348981 is about 248.5191442512.

The spelling of 15348981 in words is "fifteen million, three hundred forty-eight thousand, nine hundred eighty-one".