70732730 has 8 divisors (see below), whose sum is σ = 127318932. Its totient is φ = 28293088.

The previous prime is 70732723. The next prime is 70732741. The reversal of 70732730 is 3723707.

It can be written as a sum of positive squares in 2 ways, for example, as 68939809 + 1792921 = 8303^2 + 1339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70732693 and 70732702.

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, 3536627 + ... + 3536646.

Almost surely, 2^70732730 is an apocalyptic number.

70732730 is a deficient number, since it is larger than the sum of its proper divisors (56586202).

70732730 is a wasteful number, since it uses less digits than its factorization.

70732730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7073280.

The product of its (nonzero) digits is 6174, while the sum is 29.

The square root of 70732730 is about 8410.2752630339. The cubic root of 70732730 is about 413.5615364603.

The spelling of 70732730 in words is "seventy million, seven hundred thirty-two thousand, seven hundred thirty".