70534728 has 192 divisors, whose sum is σ = 224078400. Its totient is φ = 19837440.

The previous prime is 70534693. The next prime is 70534729. The reversal of 70534728 is 82743507.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 70534692 and 70534701.

It is not an unprimeable number, because it can be changed into a prime (70534729) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 849775 + ... + 849857.

It is an arithmetic number, because the mean of its divisors is an integer number (1167075).

Almost surely, 2^70534728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70534728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112039200).

70534728 is an abundant number, since it is smaller than the sum of its proper divisors (153543672).

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

70534728 is a wasteful number, since it uses less digits than its factorization.

70534728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 70534728 is about 8398.4955795666. The cubic root of 70534728 is about 413.1752818076.

It can be divided in two parts, 7053 and 4728, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 70534728 in words is "seventy million, five hundred thirty-four thousand, seven hundred twenty-eight".