70131828 has 24 divisors (see below), whose sum is σ = 176229088. Its totient is φ = 21578976.

The previous prime is 70131821. The next prime is 70131847. The reversal of 70131828 is 82813107.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 70131795 and 70131804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70131821) 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, 224626 + ... + 224937.

Almost surely, 2^70131828 is an apocalyptic number.

70131828 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

70131828 is an abundant number, since it is smaller than the sum of its proper divisors (106097260).

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

70131828 is a wasteful number, since it uses less digits than its factorization.

70131828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449583 (or 449581 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 70131828 is about 8374.4747895017. The cubic root of 70131828 is about 412.3870824078.

The spelling of 70131828 in words is "seventy million, one hundred thirty-one thousand, eight hundred twenty-eight".