70057284 has 48 divisors (see below), whose sum is σ = 179081280. Its totient is φ = 21139840.

The previous prime is 70057261. The next prime is 70057291. The reversal of 70057284 is 48275007.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34522 + ... + 36494.

It is an arithmetic number, because the mean of its divisors is an integer number (3730860).

Almost surely, 2^70057284 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 70057284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89540640).

70057284 is an abundant number, since it is smaller than the sum of its proper divisors (109023996).

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

70057284 is a wasteful number, since it uses less digits than its factorization.

70057284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 70057284 is about 8370.0229390367. The cubic root of 70057284 is about 412.2409201414.

The spelling of 70057284 in words is "seventy million, fifty-seven thousand, two hundred eighty-four".