40127790 has 16 divisors (see below), whose sum is σ = 96306768. Its totient is φ = 10700736.

The previous prime is 40127779. The next prime is 40127827. The reversal of 40127790 is 9772104.

It is a super-2 number, since 2×40127790² = 3220479060568200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 1337593 = 40127790 / (4 + 0 + 1 + 2 + 7 + 7 + 9 + 0).

It is a congruent 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, 668767 + ... + 668826.

It is an arithmetic number, because the mean of its divisors is an integer number (6019173).

Almost surely, 2^40127790 is an apocalyptic number.

40127790 is an abundant number, since it is smaller than the sum of its proper divisors (56178978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40127790 is a wasteful number, since it uses less digits than its factorization.

40127790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337603.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 40127790 is about 6334.6499508655. The cubic root of 40127790 is about 342.3589985605.

Adding to 40127790 its reverse (9772104), we get a palindrome (49899894).

The spelling of 40127790 in words is "forty million, one hundred twenty-seven thousand, seven hundred ninety".