70324440 has 32 divisors (see below), whose sum is σ = 210973680. Its totient is φ = 18753152.

The previous prime is 70324421. The next prime is 70324447. The reversal of 70324440 is 4442307.

It is a super-2 number, since 2×70324440² = 9891053722627200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 70324440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70324447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292899 + ... + 293138.

Almost surely, 2^70324440 is an apocalyptic number.

It is an amenable number.

70324440 is an abundant number, since it is smaller than the sum of its proper divisors (140649240).

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

70324440 is a wasteful number, since it uses less digits than its factorization.

70324440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 586051 (or 586047 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 70324440 is about 8385.9668494456. The cubic root of 70324440 is about 412.7642677592.

Adding to 70324440 its reverse (4442307), we get a palindrome (74766747).

The spelling of 70324440 in words is "seventy million, three hundred twenty-four thousand, four hundred forty".