70279720 has 96 divisors (see below), whose sum is σ = 192067200. Its totient is φ = 23033472.

The previous prime is 70279691. The next prime is 70279721. The reversal of 70279720 is 2797207.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70279721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44301 + ... + 45859.

It is an arithmetic number, because the mean of its divisors is an integer number (2000700).

Almost surely, 2^70279720 is an apocalyptic number.

70279720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70279720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96033600).

70279720 is an abundant number, since it is smaller than the sum of its proper divisors (121787480).

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

70279720 is a wasteful number, since it uses less digits than its factorization.

70279720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 12348, while the sum is 34.

The square root of 70279720 is about 8383.3000662030. The cubic root of 70279720 is about 412.6767555934.

The spelling of 70279720 in words is "seventy million, two hundred seventy-nine thousand, seven hundred twenty".