40378635 has 32 divisors (see below), whose sum is σ = 78312960. Its totient is φ = 19576800.

The previous prime is 40378627. The next prime is 40378649. The reversal of 40378635 is 53687304.

It is a happy number.

It is not a de Polignac number, because 40378635 - 2³ = 40378627 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 40378635.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12111 + ... + 15080.

It is an arithmetic number, because the mean of its divisors is an integer number (2447280).

Almost surely, 2^40378635 is an apocalyptic number.

40378635 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40378635 is a deficient number, since it is larger than the sum of its proper divisors (37934325).

40378635 is a wasteful number, since it uses less digits than its factorization.

40378635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27216 (or 27210 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 40378635 is about 6354.4185414560. The cubic root of 40378635 is about 343.0708968415.

The spelling of 40378635 in words is "forty million, three hundred seventy-eight thousand, six hundred thirty-five".