212223408 has 20 divisors (see below), whose sum is σ = 548243928. Its totient is φ = 70741120.

The previous prime is 212223397. The next prime is 212223409. The reversal of 212223408 is 804322212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (212223409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210613 + ... + 2210708.

Almost surely, 2^212223408 is an apocalyptic number.

It is an amenable number.

212223408 is an abundant number, since it is smaller than the sum of its proper divisors (336020520).

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

212223408 is a wasteful number, since it uses less digits than its factorization.

212223408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4421332 (or 4421326 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 212223408 is about 14567.8896206692. The cubic root of 212223408 is about 596.4825753907.

The spelling of 212223408 in words is "two hundred twelve million, two hundred twenty-three thousand, four hundred eight".