70221984 has 96 divisors (see below), whose sum is σ = 213373440. Its totient is φ = 19805952.

The previous prime is 70221973. The next prime is 70221989. The reversal of 70221984 is 48912207.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×70221984² = 9862254073792512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70221989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55147 + ... + 56405.

It is an arithmetic number, because the mean of its divisors is an integer number (2222640).

Almost surely, 2^70221984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70221984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106686720).

70221984 is an abundant number, since it is smaller than the sum of its proper divisors (143151456).

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

70221984 is a wasteful number, since it uses less digits than its factorization.

70221984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1362 (or 1354 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 70221984 is about 8379.8558460155. The cubic root of 70221984 is about 412.5637176136.

The spelling of 70221984 in words is "seventy million, two hundred twenty-one thousand, nine hundred eighty-four".