70016438 has 16 divisors (see below), whose sum is σ = 113917104. Its totient is φ = 32144640.

The previous prime is 70016431. The next prime is 70016449. The reversal of 70016438 is 83461007.

It is a self number, because there is not a number n which added to its sum of digits gives 70016438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70016431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23720 + ... + 26507.

It is an arithmetic number, because the mean of its divisors is an integer number (7119819).

Almost surely, 2^70016438 is an apocalyptic number.

70016438 is a deficient number, since it is larger than the sum of its proper divisors (43900666).

70016438 is a wasteful number, since it uses less digits than its factorization.

70016438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50287.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 70016438 is about 8367.5825660701. The cubic root of 70016438 is about 412.1607873073.

The spelling of 70016438 in words is "seventy million, sixteen thousand, four hundred thirty-eight".