12898731 has 8 divisors (see below), whose sum is σ = 17222544. Its totient is φ = 8587040.

The previous prime is 12898729. The next prime is 12898741. The reversal of 12898731 is 13789821.

12898731 is digitally balanced in base 2 and base 4, because in such bases 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 cyclic number.

It is not a de Polignac number, because 12898731 - 2¹ = 12898729 is a prime.

It is a super-2 number, since 2×12898731² = 332754522820722, 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 12898731.

It is not an unprimeable number, because it can be changed into a prime (12898741) 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, 156 + ... + 5081.

It is an arithmetic number, because the mean of its divisors is an integer number (2152818).

Almost surely, 2^12898731 is an apocalyptic number.

12898731 is a deficient number, since it is larger than the sum of its proper divisors (4323813).

12898731 is an equidigital number, since it uses as much as digits as its factorization.

12898731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6061.

The product of its digits is 24192, while the sum is 39.

The square root of 12898731 is about 3591.4803354606. The cubic root of 12898731 is about 234.5213192656.

The spelling of 12898731 in words is "twelve million, eight hundred ninety-eight thousand, seven hundred thirty-one".