94138640 has 40 divisors (see below), whose sum is σ = 226425240. Its totient is φ = 36356096.

The previous prime is 94138637. The next prime is 94138651. The reversal of 94138640 is 4683149.

It can be written as a sum of positive squares in 4 ways, for example, as 14500864 + 79637776 = 3808^2 + 8924^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 94138640.

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 in 7 ways as a sum of consecutive naturals, for example, 17969 + ... + 22608.

It is an arithmetic number, because the mean of its divisors is an integer number (5660631).

Almost surely, 2^94138640 is an apocalyptic number.

It is an amenable number.

94138640 is an abundant number, since it is smaller than the sum of its proper divisors (132286600).

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

94138640 is a wasteful number, since it uses less digits than its factorization.

94138640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40619 (or 40613 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 94138640 is about 9702.5068925510. The cubic root of 94138640 is about 454.9070212137.

The spelling of 94138640 in words is "ninety-four million, one hundred thirty-eight thousand, six hundred forty".