221892396 has 24 divisors (see below), whose sum is σ = 564817344. Its totient is φ = 67240080.

The previous prime is 221892379. The next prime is 221892413. The reversal of 221892396 is 693298122.

221892396 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (221892379) and next prime (221892413).

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, 840370 + ... + 840633.

It is an arithmetic number, because the mean of its divisors is an integer number (23534056).

Almost surely, 2^221892396 is an apocalyptic number.

It is an amenable number.

221892396 is an abundant number, since it is smaller than the sum of its proper divisors (342924948).

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

221892396 is a wasteful number, since it uses less digits than its factorization.

221892396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681021 (or 1681019 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 221892396 is about 14896.0530342772. The cubic root of 221892396 is about 605.4070488877.

The spelling of 221892396 in words is "two hundred twenty-one million, eight hundred ninety-two thousand, three hundred ninety-six".