20343700 has 36 divisors (see below), whose sum is σ = 47544700. Its totient is φ = 7511040.

The previous prime is 20343689. The next prime is 20343727. The reversal of 20343700 is 734302.

It can be written as a sum of positive squares in 6 ways, for example, as 5008644 + 15335056 = 2238^2 + 3916^2 .

It is a super-2 number, since 2×20343700² = 827732259380000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6525 + ... + 9124.

Almost surely, 2^20343700 is an apocalyptic number.

20343700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20343700 is an abundant number, since it is smaller than the sum of its proper divisors (27201000).

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

20343700 is a wasteful number, since it uses less digits than its factorization.

20343700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15676 (or 15669 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20343700 is about 4510.3990954238. The cubic root of 20343700 is about 272.9878475898.

The spelling of 20343700 in words is "twenty million, three hundred forty-three thousand, seven hundred".