78090038 has 16 divisors (see below), whose sum is σ = 132785520. Its totient is φ = 34144416.

The previous prime is 78090029. The next prime is 78090053. The reversal of 78090038 is 83009087.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78545 + ... + 79532.

It is an arithmetic number, because the mean of its divisors is an integer number (8299095).

Almost surely, 2^78090038 is an apocalyptic number.

78090038 is a deficient number, since it is larger than the sum of its proper divisors (54695482).

78090038 is a wasteful number, since it uses less digits than its factorization.

78090038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158111.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 78090038 is about 8836.8567941322. The cubic root of 78090038 is about 427.4302073632.

The spelling of 78090038 in words is "seventy-eight million, ninety thousand, thirty-eight".