70806528 has 176 divisors, whose sum is σ = 226971360. Its totient is φ = 21676032.

The previous prime is 70806469. The next prime is 70806539. The reversal of 70806528 is 82560807.

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 = 70806492 and 70806501.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359326 + ... + 359522.

It is an arithmetic number, because the mean of its divisors is an integer number (1289610).

Almost surely, 2^70806528 is an apocalyptic number.

70806528 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70806528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113485680).

70806528 is an abundant number, since it is smaller than the sum of its proper divisors (156164832).

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

70806528 is a wasteful number, since it uses less digits than its factorization.

70806528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 70806528 is about 8414.6614905176. The cubic root of 70806528 is about 413.7053143418.

The spelling of 70806528 in words is "seventy million, eight hundred six thousand, five hundred twenty-eight".