206400453 has 32 divisors (see below), whose sum is σ = 332328960. Its totient is φ = 111437760.

The previous prime is 206400443. The next prime is 206400461. The reversal of 206400453 is 354004602.

It is not a de Polignac number, because 206400453 - 2⁵ = 206400421 is a prime.

It is a super-2 number, since 2×206400453² = 85202293997210418, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206400443) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25018 + ... + 32228.

It is an arithmetic number, because the mean of its divisors is an integer number (10385280).

Almost surely, 2^206400453 is an apocalyptic number.

It is an amenable number.

206400453 is a deficient number, since it is larger than the sum of its proper divisors (125928507).

206400453 is a wasteful number, since it uses less digits than its factorization.

206400453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7297.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 206400453 is about 14366.6437625494. The cubic root of 206400453 is about 590.9765050884.

The spelling of 206400453 in words is "two hundred six million, four hundred thousand, four hundred fifty-three".