70132640 has 24 divisors (see below), whose sum is σ = 165688740. Its totient is φ = 28052992.

The previous prime is 70132637. The next prime is 70132669. The reversal of 70132640 is 4623107.

It can be written as a sum of positive squares in 2 ways, for example, as 68624656 + 1507984 = 8284^2 + 1228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219005 + ... + 219324.

Almost surely, 2^70132640 is an apocalyptic number.

It is an amenable number.

70132640 is an abundant number, since it is smaller than the sum of its proper divisors (95556100).

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

70132640 is a wasteful number, since it uses less digits than its factorization.

70132640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438344 (or 438336 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 70132640 is about 8374.5232700136. The cubic root of 70132640 is about 412.3886739677.

Adding to 70132640 its reverse (4623107), we get a palindrome (74755747).

The spelling of 70132640 in words is "seventy million, one hundred thirty-two thousand, six hundred forty".