70103840 has 48 divisors (see below), whose sum is σ = 167364792. Its totient is φ = 27746304.

The previous prime is 70103819. The next prime is 70103843. The reversal of 70103840 is 4830107.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 30514576 + 39589264 = 5524^2 + 6292^2 .

It is not an unprimeable number, because it can be changed into a prime (70103843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13262 + ... + 17778.

Almost surely, 2^70103840 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 70103840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83682396).

70103840 is an abundant number, since it is smaller than the sum of its proper divisors (97260952).

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

70103840 is a wasteful number, since it uses less digits than its factorization.

70103840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629 (or 4621 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 70103840 is about 8372.8035925847. The cubic root of 70103840 is about 412.3322170411.

Adding to 70103840 its reverse (4830107), we get a palindrome (74933947).

The spelling of 70103840 in words is "seventy million, one hundred three thousand, eight hundred forty".