212390070 has 16 divisors (see below), whose sum is σ = 509736240. Its totient is φ = 56637344.

The previous prime is 212390063. The next prime is 212390077. The reversal of 212390070 is 70093212.

It is an interprime number because it is at equal distance from previous prime (212390063) and next prime (212390077).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212390070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212390077) 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, 3539805 + ... + 3539864.

It is an arithmetic number, because the mean of its divisors is an integer number (31858515).

Almost surely, 2^212390070 is an apocalyptic number.

212390070 is an abundant number, since it is smaller than the sum of its proper divisors (297346170).

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

212390070 is a wasteful number, since it uses less digits than its factorization.

212390070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7079679.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 212390070 is about 14573.6086814488. The cubic root of 212390070 is about 596.6386765615.

The spelling of 212390070 in words is "two hundred twelve million, three hundred ninety thousand, seventy".