40282990 has 32 divisors (see below), whose sum is σ = 79470720. Its totient is φ = 14580000.

The previous prime is 40282961. The next prime is 40282999. The reversal of 40282990 is 9928204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40282999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26881 + ... + 28339.

It is an arithmetic number, because the mean of its divisors is an integer number (2483460).

Almost surely, 2^40282990 is an apocalyptic number.

40282990 is a deficient number, since it is larger than the sum of its proper divisors (39187730).

40282990 is a wasteful number, since it uses less digits than its factorization.

40282990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 40282990 is about 6346.8882139203. Note that the first 3 decimals coincide. The cubic root of 40282990 is about 342.7998049784.

The spelling of 40282990 in words is "forty million, two hundred eighty-two thousand, nine hundred ninety".