20803375 has 16 divisors (see below), whose sum is σ = 26522496. Its totient is φ = 16284000.

The previous prime is 20803373. The next prime is 20803399. The reversal of 20803375 is 57330802.

It is not a de Polignac number, because 20803375 - 2¹ = 20803373 is a prime.

It is a super-2 number, since 2×20803375² = 865560822781250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20803373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4105 + ... + 7645.

It is an arithmetic number, because the mean of its divisors is an integer number (1657656).

Almost surely, 2^20803375 is an apocalyptic number.

20803375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20803375 is a deficient number, since it is larger than the sum of its proper divisors (5719121).

20803375 is an equidigital number, since it uses as much as digits as its factorization.

20803375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603 (or 3593 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20803375 is about 4561.0716942403. The cubic root of 20803375 is about 275.0286471534.

The spelling of 20803375 in words is "twenty million, eight hundred three thousand, three hundred seventy-five".