70323140 has 12 divisors (see below), whose sum is σ = 147678636. Its totient is φ = 28129248.

The previous prime is 70323137. The next prime is 70323181. The reversal of 70323140 is 4132307.

It can be written as a sum of positive squares in 2 ways, for example, as 23892544 + 46430596 = 4888^2 + 6814^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 3516157 = 70323140 / (7 + 0 + 3 + 2 + 3 + 1 + 4 + 0).

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, 1758059 + ... + 1758098.

It is an arithmetic number, because the mean of its divisors is an integer number (12306553).

Almost surely, 2^70323140 is an apocalyptic number.

It is an amenable number.

70323140 is an abundant number, since it is smaller than the sum of its proper divisors (77355496).

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

70323140 is a wasteful number, since it uses less digits than its factorization.

70323140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3516166 (or 3516164 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 70323140 is about 8385.8893386450. The cubic root of 70323140 is about 412.7617243245.

Adding to 70323140 its reverse (4132307), we get a palindrome (74455447).

The spelling of 70323140 in words is "seventy million, three hundred twenty-three thousand, one hundred forty".