70284820 has 12 divisors (see below), whose sum is σ = 147598164. Its totient is φ = 28113920.

The previous prime is 70284779. The next prime is 70284821. The reversal of 70284820 is 2848207.

It can be written as a sum of positive squares in 2 ways, for example, as 23990404 + 46294416 = 4898^2 + 6804^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70284821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1757101 + ... + 1757140.

It is an arithmetic number, because the mean of its divisors is an integer number (12299847).

Almost surely, 2^70284820 is an apocalyptic number.

It is an amenable number.

70284820 is an abundant number, since it is smaller than the sum of its proper divisors (77313344).

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

70284820 is a wasteful number, since it uses less digits than its factorization.

70284820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514250 (or 3514248 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 70284820 is about 8383.6042368423. The cubic root of 70284820 is about 412.6867376126.

The spelling of 70284820 in words is "seventy million, two hundred eighty-four thousand, eight hundred twenty".