20836249398 has 24 divisors (see below), whose sum is σ = 45208909200. Its totient is φ = 6935616144.

The previous prime is 20836249397. The next prime is 20836249403. The reversal of 20836249398 is 89394263802.

It is a happy number.

20836249398 is a `hidden beast` number, since 2 + 0 + 8 + 3 + 6 + 249 + 398 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20836249391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 803578 + ... + 829101.

It is an arithmetic number, because the mean of its divisors is an integer number (1883704550).

Almost surely, 2^20836249398 is an apocalyptic number.

20836249398 is an abundant number, since it is smaller than the sum of its proper divisors (24372659802).

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

20836249398 is a wasteful number, since it uses less digits than its factorization.

20836249398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633396 (or 1633393 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 54.

The spelling of 20836249398 in words is "twenty billion, eight hundred thirty-six million, two hundred forty-nine thousand, three hundred ninety-eight".