40615130 has 16 divisors (see below), whose sum is σ = 73832904. Its totient is φ = 16084800.

The previous prime is 40615123. The next prime is 40615139. The reversal of 40615130 is 3151604.

It is a Cunningham number, because it is equal to 6373²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 39025009 + 1590121 = 6247^2 + 1261^2 .

It is not an unprimeable number, because it can be changed into a prime (40615139) 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, 19097 + ... + 21116.

Almost surely, 2^40615130 is an apocalyptic number.

40615130 is a deficient number, since it is larger than the sum of its proper divisors (33217774).

40615130 is a wasteful number, since it uses less digits than its factorization.

40615130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40321.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 40615130 is about 6373.0000784560. Note that the first 4 decimals coincide. The cubic root of 40615130 is about 343.7393746578.

Adding to 40615130 its reverse (3151604), we get a palindrome (43766734).

The spelling of 40615130 in words is "forty million, six hundred fifteen thousand, one hundred thirty".