221450796 has 54 divisors (see below), whose sum is σ = 651175980. Its totient is φ = 63271152.

The previous prime is 221450791. The next prime is 221450821. The reversal of 221450796 is 697054122.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 221450796.

It is not an unprimeable number, because it can be changed into a prime (221450791) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 61006 + ... + 64533.

Almost surely, 2^221450796 is an apocalyptic number.

It is an amenable number.

221450796 is an abundant number, since it is smaller than the sum of its proper divisors (429725184).

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

221450796 is a wasteful number, since it uses less digits than its factorization.

221450796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125563 (or 125551 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 221450796 is about 14881.2229336167. Note that the first 3 decimals coincide. The cubic root of 221450796 is about 605.0051644483.

The spelling of 221450796 in words is "two hundred twenty-one million, four hundred fifty thousand, seven hundred ninety-six".