70728234 has 8 divisors (see below), whose sum is σ = 141456480. Its totient is φ = 23576076.

The previous prime is 70728233. The next prime is 70728257. The reversal of 70728234 is 43282707.

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

70728234 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 70728195 and 70728204.

It is not an unprimeable number, because it can be changed into a prime (70728233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5894014 + ... + 5894025.

It is an arithmetic number, because the mean of its divisors is an integer number (17682060).

Almost surely, 2^70728234 is an apocalyptic number.

70728234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

70728234 is a wasteful number, since it uses less digits than its factorization.

70728234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11788044.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 70728234 is about 8410.0079667025. The cubic root of 70728234 is about 413.5527738405.

The spelling of 70728234 in words is "seventy million, seven hundred twenty-eight thousand, two hundred thirty-four".