70541728 has 24 divisors (see below), whose sum is σ = 141502788. Its totient is φ = 34604544.

The previous prime is 70541701. The next prime is 70541741. The reversal of 70541728 is 82714507.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 70358544 + 183184 = 8388^2 + 428^2 .

It is a super-2 number, since 2×70541728² = 9952270778451968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70541693 and 70541702.

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, 19101 + ... + 22492.

Almost surely, 2^70541728 is an apocalyptic number.

It is an amenable number.

70541728 is an abundant number, since it is smaller than the sum of its proper divisors (70961060).

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

70541728 is a wasteful number, since it uses less digits than its factorization.

70541728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41656 (or 41648 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 70541728 is about 8398.9123105316. The cubic root of 70541728 is about 413.1889494547.

The spelling of 70541728 in words is "seventy million, five hundred forty-one thousand, seven hundred twenty-eight".