70028288 has 44 divisors (see below), whose sum is σ = 152738952. Its totient is φ = 31825920.

The previous prime is 70028269. The next prime is 70028293. The reversal of 70028288 is 88282007.

It is a tau number, because it is divible by the number of its divisors (44).

It is a super-2 number, since 2×70028288² = 9807922240421888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8156 + ... + 14372.

Almost surely, 2^70028288 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 70028288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76369476).

70028288 is an abundant number, since it is smaller than the sum of its proper divisors (82710664).

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

70028288 is a wasteful number, since it uses less digits than its factorization.

70028288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6248 (or 6230 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 70028288 is about 8368.2906259283. The cubic root of 70028288 is about 412.1840381798.

The spelling of 70028288 in words is "seventy million, twenty-eight thousand, two hundred eighty-eight".