70506280 has 32 divisors (see below), whose sum is σ = 170843400. Its totient is φ = 26032896.

The previous prime is 70506277. The next prime is 70506329. The reversal of 70506280 is 8260507.

It can be written as a sum of positive squares in 4 ways, for example, as 62315236 + 8191044 = 7894^2 + 2862^2 .

It is a super-2 number, since 2×70506280² = 9942271038876800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67275 + ... + 68314.

Almost surely, 2^70506280 is an apocalyptic number.

It is an amenable number.

70506280 is an abundant number, since it is smaller than the sum of its proper divisors (100337120).

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

70506280 is a wasteful number, since it uses less digits than its factorization.

70506280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135613 (or 135609 counting only the distinct ones).

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

The square root of 70506280 is about 8396.8017721035. The cubic root of 70506280 is about 413.1197271832.

Adding to 70506280 its reverse (8260507), we get a palindrome (78766787).

The spelling of 70506280 in words is "seventy million, five hundred six thousand, two hundred eighty".