20498375 has 8 divisors (see below), whose sum is σ = 25582128. Its totient is φ = 16398600.

The previous prime is 20498371. The next prime is 20498419. The reversal of 20498375 is 57389402.

It is not a de Polignac number, because 20498375 - 2² = 20498371 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20498371) 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, 81869 + ... + 82118.

It is an arithmetic number, because the mean of its divisors is an integer number (3197766).

Almost surely, 2^20498375 is an apocalyptic number.

20498375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20498375 is a deficient number, since it is larger than the sum of its proper divisors (5083753).

20498375 is an equidigital number, since it uses as much as digits as its factorization.

20498375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164002 (or 163992 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 20498375 is about 4527.5131142825. The cubic root of 20498375 is about 273.6779520298.

The spelling of 20498375 in words is "twenty million, four hundred ninety-eight thousand, three hundred seventy-five".