70056820 has 24 divisors (see below), whose sum is σ = 148113000. Its totient is φ = 27833472.

The previous prime is 70056817. The next prime is 70056821. The reversal of 70056820 is 2865007.

It can be written as a sum of positive squares in 4 ways, for example, as 12236004 + 57820816 = 3498^2 + 7604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70056821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8775 + ... + 14734.

It is an arithmetic number, because the mean of its divisors is an integer number (6171375).

Almost surely, 2^70056820 is an apocalyptic number.

It is an amenable number.

70056820 is an abundant number, since it is smaller than the sum of its proper divisors (78056180).

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

70056820 is a wasteful number, since it uses less digits than its factorization.

70056820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23667 (or 23665 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 70056820 is about 8369.9952210261. The cubic root of 70056820 is about 412.2400100281.

It can be divided in two parts, 70056 and 820, that added together give a triangular number (70876 = T₃₇₆).

The spelling of 70056820 in words is "seventy million, fifty-six thousand, eight hundred twenty".