40620287 has 4 divisors (see below), whose sum is σ = 40661400. Its totient is φ = 40579176.

The previous prime is 40620269. The next prime is 40620289. The reversal of 40620287 is 78202604.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40620287 - 2¹⁴ = 40603903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40620289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19037 + ... + 21062.

It is an arithmetic number, because the mean of its divisors is an integer number (10165350).

Almost surely, 2^40620287 is an apocalyptic number.

40620287 is a deficient number, since it is larger than the sum of its proper divisors (41113).

40620287 is a wasteful number, since it uses less digits than its factorization.

40620287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41112.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 40620287 is about 6373.4046631294. The cubic root of 40620287 is about 343.7539225117.

The spelling of 40620287 in words is "forty million, six hundred twenty thousand, two hundred eighty-seven".