212427988 has 24 divisors (see below), whose sum is σ = 394377984. Its totient is φ = 99772800.

The previous prime is 212427983. The next prime is 212428009. The reversal of 212427988 is 889724212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212427983) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36093 + ... + 41563.

It is an arithmetic number, because the mean of its divisors is an integer number (16432416).

Almost surely, 2^212427988 is an apocalyptic number.

It is an amenable number.

212427988 is a deficient number, since it is larger than the sum of its proper divisors (181949996).

212427988 is a wasteful number, since it uses less digits than its factorization.

212427988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6063 (or 6061 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The square root of 212427988 is about 14574.9095365975. The cubic root of 212427988 is about 596.6741804172.

The spelling of 212427988 in words is "two hundred twelve million, four hundred twenty-seven thousand, nine hundred eighty-eight".