40778305 has 8 divisors (see below), whose sum is σ = 49258944. Its totient is φ = 32406000.

The previous prime is 40778293. The next prime is 40778327. The reversal of 40778305 is 50387704.

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

It is not a de Polignac number, because 40778305 - 2¹⁹ = 40254017 is a prime.

It is a Duffinian 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, 26251 + ... + 27760.

It is an arithmetic number, because the mean of its divisors is an integer number (6157368).

Almost surely, 2^40778305 is an apocalyptic number.

It is an amenable number.

40778305 is a deficient number, since it is larger than the sum of its proper divisors (8480639).

40778305 is a wasteful number, since it uses less digits than its factorization.

40778305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54167.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 40778305 is about 6385.7893012532. The cubic root of 40778305 is about 344.1990943447.

The spelling of 40778305 in words is "forty million, seven hundred seventy-eight thousand, three hundred five".