221474092 has 24 divisors (see below), whose sum is σ = 443663136. Its totient is φ = 94764288.

The previous prime is 221474069. The next prime is 221474101. The reversal of 221474092 is 290474122.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12228 + ... + 24340.

It is an arithmetic number, because the mean of its divisors is an integer number (18485964).

Almost surely, 2^221474092 is an apocalyptic number.

It is an amenable number.

221474092 is an abundant number, since it is smaller than the sum of its proper divisors (222189044).

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

221474092 is a wasteful number, since it uses less digits than its factorization.

221474092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12777 (or 12775 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 221474092 is about 14882.0056444016. The cubic root of 221474092 is about 605.0263786509.

The spelling of 221474092 in words is "two hundred twenty-one million, four hundred seventy-four thousand, ninety-two".