20146775 has 24 divisors (see below), whose sum is σ = 27722928. Its totient is φ = 14400000.

The previous prime is 20146757. The next prime is 20146787. The reversal of 20146775 is 57764102.

It is not a de Polignac number, because 20146775 - 2¹⁴ = 20130391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16175 + ... + 17375.

It is an arithmetic number, because the mean of its divisors is an integer number (1155122).

Almost surely, 2^20146775 is an apocalyptic number.

20146775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20146775 is a deficient number, since it is larger than the sum of its proper divisors (7576153).

20146775 is a wasteful number, since it uses less digits than its factorization.

20146775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1278 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 20146775 is about 4488.5159017207. The cubic root of 20146775 is about 272.1041583141.

The spelling of 20146775 in words is "twenty million, one hundred forty-six thousand, seven hundred seventy-five".