84721344 has 28 divisors (see below), whose sum is σ = 224159064. Its totient is φ = 28240384.

The previous prime is 84721333. The next prime is 84721367. The reversal of 84721344 is 44312748.

It is a super-2 number, since 2×84721344² = 14355412258332672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220437 + ... + 220820.

Almost surely, 2^84721344 is an apocalyptic number.

It is an amenable number.

84721344 is an abundant number, since it is smaller than the sum of its proper divisors (139437720).

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

84721344 is a wasteful number, since it uses less digits than its factorization.

84721344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441272 (or 441262 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 84721344 is about 9204.4198078966. The cubic root of 84721344 is about 439.2019694604.

The spelling of 84721344 in words is "eighty-four million, seven hundred twenty-one thousand, three hundred forty-four".