70083720 has 288 divisors, whose sum is σ = 276096600. Its totient is φ = 15353856.

The previous prime is 70083703. The next prime is 70083733. The reversal of 70083720 is 2738007.

It can be written as a sum of positive squares in 4 ways, for example, as 59074596 + 11009124 = 7686^2 + 3318^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 511492 + ... + 511628.

Almost surely, 2^70083720 is an apocalyptic number.

70083720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70083720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138048300).

70083720 is an abundant number, since it is smaller than the sum of its proper divisors (206012880).

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

70083720 is a wasteful number, since it uses less digits than its factorization.

70083720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 70083720 is about 8371.6019972285. The cubic root of 70083720 is about 412.2927664299.

The spelling of 70083720 in words is "seventy million, eighty-three thousand, seven hundred twenty".