70138892 has 6 divisors (see below), whose sum is σ = 122743068. Its totient is φ = 35069444.

The previous prime is 70138867. The next prime is 70138921. The reversal of 70138892 is 29883107.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8767358 + ... + 8767365.

It is an arithmetic number, because the mean of its divisors is an integer number (20457178).

Almost surely, 2^70138892 is an apocalyptic number.

It is an amenable number.

70138892 is a deficient number, since it is larger than the sum of its proper divisors (52604176).

70138892 is a wasteful number, since it uses less digits than its factorization.

70138892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17534727 (or 17534725 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 70138892 is about 8374.8965366743. The cubic root of 70138892 is about 412.4009277836.

It can be divided in two parts, 701 and 38892, that added together give a palindrome (39593).

The spelling of 70138892 in words is "seventy million, one hundred thirty-eight thousand, eight hundred ninety-two".