40540030 has 16 divisors (see below), whose sum is σ = 76145184. Its totient is φ = 15510880.

The previous prime is 40540009. The next prime is 40540037. The reversal of 40540030 is 3004504.

It is a junction number, because it is equal to n+sod(n) for n = 40539986 and 40540013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40540037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87901 + ... + 88360.

It is an arithmetic number, because the mean of its divisors is an integer number (4759074).

Almost surely, 2^40540030 is an apocalyptic number.

40540030 is a deficient number, since it is larger than the sum of its proper divisors (35605154).

40540030 is a wasteful number, since it uses less digits than its factorization.

40540030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176291.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 40540030 is about 6367.1053077517. The cubic root of 40540030 is about 343.5273785002.

Adding to 40540030 its reverse (3004504), we get a palindrome (43544534).

The spelling of 40540030 in words is "forty million, five hundred forty thousand, thirty".