70143284 has 18 divisors (see below), whose sum is σ = 128323650. Its totient is φ = 33545776.

The previous prime is 70143263. The next prime is 70143287. The reversal of 70143284 is 48234107.

It can be written as a sum of positive squares in only one way, i.e., 70090384 + 52900 = 8372^2 + 230^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70143287) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14459 + ... + 18690.

Almost surely, 2^70143284 is an apocalyptic number.

It is an amenable number.

70143284 is a deficient number, since it is larger than the sum of its proper divisors (58180366).

70143284 is a wasteful number, since it uses less digits than its factorization.

70143284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33199 (or 33174 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 70143284 is about 8375.1587447642. The cubic root of 70143284 is about 412.4095355950.

The spelling of 70143284 in words is "seventy million, one hundred forty-three thousand, two hundred eighty-four".