40781038 has 8 divisors (see below), whose sum is σ = 61285032. Its totient is φ = 20352696.

The previous prime is 40781021. The next prime is 40781053. The reversal of 40781038 is 83018704.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17545 + ... + 19732.

It is an arithmetic number, because the mean of its divisors is an integer number (7660629).

Almost surely, 2^40781038 is an apocalyptic number.

40781038 is a deficient number, since it is larger than the sum of its proper divisors (20503994).

40781038 is a wasteful number, since it uses less digits than its factorization.

40781038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37826.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 40781038 is about 6386.0032884426. The cubic root of 40781038 is about 344.2067836876.

The spelling of 40781038 in words is "forty million, seven hundred eighty-one thousand, thirty-eight".