70513238 has 4 divisors (see below), whose sum is σ = 105769860. Its totient is φ = 35256618.

The previous prime is 70513213. The next prime is 70513271. The reversal of 70513238 is 83231507.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 70513238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17628308 + ... + 17628311.

It is an arithmetic number, because the mean of its divisors is an integer number (26442465).

Almost surely, 2^70513238 is an apocalyptic number.

70513238 is a deficient number, since it is larger than the sum of its proper divisors (35256622).

70513238 is a wasteful number, since it uses less digits than its factorization.

70513238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35256621.

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

The square root of 70513238 is about 8397.2160862991. The cubic root of 70513238 is about 413.1333164810.

The spelling of 70513238 in words is "seventy million, five hundred thirteen thousand, two hundred thirty-eight".