70221284 has 12 divisors (see below), whose sum is σ = 140442624. Its totient is φ = 30094824.

The previous prime is 70221257. The next prime is 70221311. The reversal of 70221284 is 48212207.

It is an interprime number because it is at equal distance from previous prime (70221257) and next prime (70221311).

70221284 is an admirable number.

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, 1253924 + ... + 1253979.

It is an arithmetic number, because the mean of its divisors is an integer number (11703552).

Almost surely, 2^70221284 is an apocalyptic number.

It is an amenable number.

70221284 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

70221284 is a wasteful number, since it uses less digits than its factorization.

70221284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507914 (or 2507912 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 70221284 is about 8379.8140790831. The cubic root of 70221284 is about 412.5623467440.

The spelling of 70221284 in words is "seventy million, two hundred twenty-one thousand, two hundred eighty-four".