212409474 has 16 divisors (see below), whose sum is σ = 447178080. Its totient is φ = 67076640.

The previous prime is 212409469. The next prime is 212409481. The reversal of 212409474 is 474904212.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 931507 + ... + 931734.

It is an arithmetic number, because the mean of its divisors is an integer number (27948630).

Almost surely, 2^212409474 is an apocalyptic number.

212409474 is an abundant number, since it is smaller than the sum of its proper divisors (234768606).

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

212409474 is a wasteful number, since it uses less digits than its factorization.

212409474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863265.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 212409474 is about 14574.2743901712. The cubic root of 212409474 is about 596.6568456852.

The spelling of 212409474 in words is "two hundred twelve million, four hundred nine thousand, four hundred seventy-four".