70263820 has 48 divisors (see below), whose sum is σ = 161689248. Its totient is φ = 25436160.

The previous prime is 70263811. The next prime is 70263847. The reversal of 70263820 is 2836207.

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 15 ways as a sum of consecutive naturals, for example, 60364 + ... + 61516.

It is an arithmetic number, because the mean of its divisors is an integer number (3368526).

Almost surely, 2^70263820 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 70263820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80844624).

70263820 is an abundant number, since it is smaller than the sum of its proper divisors (91425428).

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

70263820 is a wasteful number, since it uses less digits than its factorization.

70263820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 70263820 is about 8382.3516986583. The cubic root of 70263820 is about 412.6456320806.

The spelling of 70263820 in words is "seventy million, two hundred sixty-three thousand, eight hundred twenty".