20541700 has 18 divisors (see below), whose sum is σ = 44575706. Its totient is φ = 8216640.

The previous prime is 20541671. The next prime is 20541701. The reversal of 20541700 is 714502.

It can be written as a sum of positive squares in 3 ways, for example, as 3748096 + 16793604 = 1936^2 + 4098^2 .

It is a super-2 number, since 2×20541700² = 843922877780000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20541701) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102609 + ... + 102808.

Almost surely, 2^20541700 is an apocalyptic number.

20541700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20541700 is an abundant number, since it is smaller than the sum of its proper divisors (24034006).

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

20541700 is a wasteful number, since it uses less digits than its factorization.

20541700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205431 (or 205424 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 19.

The square root of 20541700 is about 4532.2952242765. The cubic root of 20541700 is about 273.8706299602.

It can be divided in two parts, 205 and 41700, that added together give a triangular number (41905 = T₂₈₉).

The spelling of 20541700 in words is "twenty million, five hundred forty-one thousand, seven hundred".