70142880 has 96 divisors (see below), whose sum is σ = 228614400. Its totient is φ = 18056192.

The previous prime is 70142873. The next prime is 70142881. The reversal of 70142880 is 8824107.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×70142880² = 9840047229388800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (70142881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11401 + ... + 16439.

It is an arithmetic number, because the mean of its divisors is an integer number (2381400).

Almost surely, 2^70142880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70142880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114307200).

70142880 is an abundant number, since it is smaller than the sum of its proper divisors (158471520).

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

70142880 is a wasteful number, since it uses less digits than its factorization.

70142880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5086 (or 5078 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 30.

The square root of 70142880 is about 8375.1346257836. The cubic root of 70142880 is about 412.4087438168.

Adding to 70142880 its reverse (8824107), we get a palindrome (78966987).

The spelling of 70142880 in words is "seventy million, one hundred forty-two thousand, eight hundred eighty".