84220072 has 16 divisors (see below), whose sum is σ = 160270560. Its totient is φ = 41481264.

The previous prime is 84220069. The next prime is 84220079. The reversal of 84220072 is 27002248.

It is not an unprimeable number, because it can be changed into a prime (84220079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78028 + ... + 79099.

It is an arithmetic number, because the mean of its divisors is an integer number (10016910).

Almost surely, 2^84220072 is an apocalyptic number.

It is an amenable number.

84220072 is a deficient number, since it is larger than the sum of its proper divisors (76050488).

84220072 is a wasteful number, since it uses less digits than its factorization.

84220072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157200 (or 157196 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 84220072 is about 9177.1494484943. The cubic root of 84220072 is about 438.3340445692.

The spelling of 84220072 in words is "eighty-four million, two hundred twenty thousand, seventy-two".