70138512 has 30 divisors (see below), whose sum is σ = 196290822. Its totient is φ = 23379456.

The previous prime is 70138511. The next prime is 70138513. The reversal of 70138512 is 21583107.

It is an interprime number because it is at equal distance from previous prime (70138511) and next prime (70138513).

It can be written as a sum of positive squares in only one way, i.e., 50637456 + 19501056 = 7116^2 + 4416^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70138511) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 243393 + ... + 243680.

Almost surely, 2^70138512 is an apocalyptic number.

70138512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70138512 is an abundant number, since it is smaller than the sum of its proper divisors (126152310).

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

70138512 is a wasteful number, since it uses less digits than its factorization.

70138512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487087 (or 487078 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 70138512 is about 8374.8738497962. The cubic root of 70138512 is about 412.4001830107.

The spelling of 70138512 in words is "seventy million, one hundred thirty-eight thousand, five hundred twelve".