212652690 has 32 divisors (see below), whose sum is σ = 524162880. Its totient is φ = 55174464.

The previous prime is 212652689. The next prime is 212652701. The reversal of 212652690 is 96256212.

It is a super-2 number, since 2×212652690² = 90442333128472200, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 94680 + ... + 96899.

It is an arithmetic number, because the mean of its divisors is an integer number (16380090).

Almost surely, 2^212652690 is an apocalyptic number.

212652690 is an abundant number, since it is smaller than the sum of its proper divisors (311510190).

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

212652690 is a wasteful number, since it uses less digits than its factorization.

212652690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191626.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 212652690 is about 14582.6160204539. The cubic root of 212652690 is about 596.8844895470.

The spelling of 212652690 in words is "two hundred twelve million, six hundred fifty-two thousand, six hundred ninety".