212404003400 has 48 divisors (see below), whose sum is σ = 494588991600. Its totient is φ = 84832623680.

The previous prime is 212404003393. The next prime is 212404003411. The reversal of 212404003400 is 4300404212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 673982 + ... + 937581.

It is an arithmetic number, because the mean of its divisors is an integer number (10303937325).

Almost surely, 2^212404003400 is an apocalyptic number.

212404003400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212404003400 is an abundant number, since it is smaller than the sum of its proper divisors (282184988200).

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

212404003400 is a wasteful number, since it uses less digits than its factorization.

212404003400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1612238 (or 1612229 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 212404003400 its reverse (4300404212), we get a palindrome (216704407612).

The spelling of 212404003400 in words is "two hundred twelve billion, four hundred four million, three thousand, four hundred".