212995400 has 24 divisors (see below), whose sum is σ = 495214770. Its totient is φ = 85198080.

The previous prime is 212995357. The next prime is 212995403. The reversal of 212995400 is 4599212.

It can be written as a sum of positive squares in 3 ways, for example, as 173027716 + 39967684 = 13154^2 + 6322^2 .

It is not an unprimeable number, because it can be changed into a prime (212995403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 532289 + ... + 532688.

Almost surely, 2^212995400 is an apocalyptic number.

212995400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212995400 is an abundant number, since it is smaller than the sum of its proper divisors (282219370).

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

212995400 is a wasteful number, since it uses less digits than its factorization.

212995400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064993 (or 1064984 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 212995400 is about 14594.3619250723. The cubic root of 212995400 is about 597.2049627927.

The spelling of 212995400 in words is "two hundred twelve million, nine hundred ninety-five thousand, four hundred".