70247740 has 48 divisors (see below), whose sum is σ = 156939552. Its totient is φ = 26320896.

The previous prime is 70247717. The next prime is 70247743. The reversal of 70247740 is 4774207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70247743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104044 + ... + 104716.

It is an arithmetic number, because the mean of its divisors is an integer number (3269574).

Almost surely, 2^70247740 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 70247740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78469776).

70247740 is an abundant number, since it is smaller than the sum of its proper divisors (86691812).

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

70247740 is a wasteful number, since it uses less digits than its factorization.

70247740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006 (or 1004 counting only the distinct ones).

The product of its (nonzero) digits is 10976, while the sum is 31.

The square root of 70247740 is about 8381.3924857389. The cubic root of 70247740 is about 412.6141514504.

The spelling of 70247740 in words is "seventy million, two hundred forty-seven thousand, seven hundred forty".