40254540 has 48 divisors (see below), whose sum is σ = 118648320. Its totient is φ = 10169280.

The previous prime is 40254527. The next prime is 40254541. The reversal of 40254540 is 4545204.

It is a super-2 number, since 2×40254540² = 3240855981223200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40254540.

It is not an unprimeable number, because it can be changed into a prime (40254541) 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, 16516 + ... + 18795.

It is an arithmetic number, because the mean of its divisors is an integer number (2471840).

Almost surely, 2^40254540 is an apocalyptic number.

It is an amenable number.

40254540 is an abundant number, since it is smaller than the sum of its proper divisors (78393780).

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

40254540 is a wasteful number, since it uses less digits than its factorization.

40254540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35342 (or 35340 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 40254540 is about 6344.6465622602. The cubic root of 40254540 is about 342.7190847927.

Adding to 40254540 its reverse (4545204), we get a palindrome (44799744).

The spelling of 40254540 in words is "forty million, two hundred fifty-four thousand, five hundred forty".