12137798 has 4 divisors (see below), whose sum is σ = 18206700. Its totient is φ = 6068898.

The previous prime is 12137753. The next prime is 12137803. The reversal of 12137798 is 89773121.

12137798 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×12137798² = 294652280577608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3034448 + ... + 3034451.

It is an arithmetic number, because the mean of its divisors is an integer number (4551675).

Almost surely, 2^12137798 is an apocalyptic number.

12137798 is a deficient number, since it is larger than the sum of its proper divisors (6068902).

12137798 is an equidigital number, since it uses as much as digits as its factorization.

12137798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6068901.

The product of its digits is 21168, while the sum is 38.

The square root of 12137798 is about 3483.9342703329. The cubic root of 12137798 is about 229.8158450299.

The spelling of 12137798 in words is "twelve million, one hundred thirty-seven thousand, seven hundred ninety-eight".