13621898 has 8 divisors (see below), whose sum is σ = 21508320. Its totient is φ = 6452460.

The previous prime is 13621889. The next prime is 13621903. The reversal of 13621898 is 89812631.

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

It is a super-2 number, since 2×13621898² = 371112210244808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (38), and also a Moran number because the ratio is a prime number: 358471 = 13621898 / (1 + 3 + 6 + 2 + 1 + 8 + 9 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179198 + ... + 179273.

It is an arithmetic number, because the mean of its divisors is an integer number (2688540).

Almost surely, 2^13621898 is an apocalyptic number.

13621898 is a deficient number, since it is larger than the sum of its proper divisors (7886422).

13621898 is a wasteful number, since it uses less digits than its factorization.

13621898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358492.

The product of its digits is 20736, while the sum is 38.

The square root of 13621898 is about 3690.7855532393. The cubic root of 13621898 is about 238.8246819171.

The spelling of 13621898 in words is "thirteen million, six hundred twenty-one thousand, eight hundred ninety-eight".