70380280 has 16 divisors (see below), whose sum is σ = 158355720. Its totient is φ = 28152096.

The previous prime is 70380269. The next prime is 70380281. The reversal of 70380280 is 8208307.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70380281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879714 + ... + 879793.

Almost surely, 2^70380280 is an apocalyptic number.

It is an amenable number.

70380280 is an abundant number, since it is smaller than the sum of its proper divisors (87975440).

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

70380280 is a wasteful number, since it uses less digits than its factorization.

70380280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1759518 (or 1759514 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 70380280 is about 8389.2955604151. The cubic root of 70380280 is about 412.8734884839.

Adding to 70380280 its reverse (8208307), we get a palindrome (78588587).

The spelling of 70380280 in words is "seventy million, three hundred eighty thousand, two hundred eighty".