12247998 has 16 divisors (see below), whose sum is σ = 27995520. Its totient is φ = 3499416.

The previous prime is 12247981. The next prime is 12248011. The reversal of 12247998 is 89974221.

It is a super-3 number, since 3×12247998³ (a number of 22 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 291619 = 12247998 / (1 + 2 + 2 + 4 + 7 + 9 + 9 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145768 + ... + 145851.

It is an arithmetic number, because the mean of its divisors is an integer number (1749720).

Almost surely, 2^12247998 is an apocalyptic number.

12247998 is an abundant number, since it is smaller than the sum of its proper divisors (15747522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12247998 is a wasteful number, since it uses less digits than its factorization.

12247998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291631.

The product of its digits is 72576, while the sum is 42.

The square root of 12247998 is about 3499.7139883139. The cubic root of 12247998 is about 230.5092559685.

The spelling of 12247998 in words is "twelve million, two hundred forty-seven thousand, nine hundred ninety-eight".