221849352 has 48 divisors (see below), whose sum is σ = 626970240. Its totient is φ = 70734048.

The previous prime is 221849297. The next prime is 221849387. The reversal of 221849352 is 253948122.

It is a happy number.

221849352 is a `hidden beast` number, since 221 + 84 + 9 + 352 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65328 + ... + 68639.

It is an arithmetic number, because the mean of its divisors is an integer number (13061880).

Almost surely, 2^221849352 is an apocalyptic number.

It is an amenable number.

221849352 is an abundant number, since it is smaller than the sum of its proper divisors (405120888).

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

221849352 is a wasteful number, since it uses less digits than its factorization.

221849352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134002 (or 133995 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 221849352 is about 14894.6081519455. The cubic root of 221849352 is about 605.3678995422.

The spelling of 221849352 in words is "two hundred twenty-one million, eight hundred forty-nine thousand, three hundred fifty-two".