40287770 has 32 divisors (see below), whose sum is σ = 74262528. Its totient is φ = 15732288.

The previous prime is 40287713. The next prime is 40287781. The reversal of 40287770 is 7778204.

It is a self number, because there is not a number n which added to its sum of digits gives 40287770.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104999 + ... + 105381.

It is an arithmetic number, because the mean of its divisors is an integer number (2320704).

Almost surely, 2^40287770 is an apocalyptic number.

40287770 is a deficient number, since it is larger than the sum of its proper divisors (33974758).

40287770 is a wasteful number, since it uses less digits than its factorization.

40287770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614.

The product of its (nonzero) digits is 21952, while the sum is 35.

The square root of 40287770 is about 6347.2647652355. The cubic root of 40287770 is about 342.8133633750.

The spelling of 40287770 in words is "forty million, two hundred eighty-seven thousand, seven hundred seventy".