70523138 has 16 divisors (see below), whose sum is σ = 121008384. Its totient is φ = 30196320.

The previous prime is 70523059. The next prime is 70523153. The reversal of 70523138 is 83132507.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 70523138.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22631 + ... + 25557.

It is an arithmetic number, because the mean of its divisors is an integer number (7563024).

Almost surely, 2^70523138 is an apocalyptic number.

70523138 is a deficient number, since it is larger than the sum of its proper divisors (50485246).

70523138 is a wasteful number, since it uses less digits than its factorization.

70523138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4657.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 70523138 is about 8397.8055466890. The cubic root of 70523138 is about 413.1526501009.

The spelling of 70523138 in words is "seventy million, five hundred twenty-three thousand, one hundred thirty-eight".