212252424 has 32 divisors (see below), whose sum is σ = 544974720. Its totient is φ = 68838336.

The previous prime is 212252389. The next prime is 212252431. The reversal of 212252424 is 424252212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212252394 and 212252403.

It is an unprimeable number.

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, 118624 + ... + 120399.

It is an arithmetic number, because the mean of its divisors is an integer number (17030460).

Almost surely, 2^212252424 is an apocalyptic number.

212252424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

212252424 is an abundant number, since it is smaller than the sum of its proper divisors (332722296).

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

212252424 is a wasteful number, since it uses less digits than its factorization.

212252424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239069 (or 239065 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 212252424 is about 14568.8854755606. The cubic root of 212252424 is about 596.5097586153.

The spelling of 212252424 in words is "two hundred twelve million, two hundred fifty-two thousand, four hundred twenty-four".