40136460 has 96 divisors (see below), whose sum is σ = 138335232. Its totient is φ = 8467200.

The previous prime is 40136441. The next prime is 40136471. The reversal of 40136460 is 6463104.

It is a super-2 number, since 2×40136460² = 3221870842663200, 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 40136460.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1785 + ... + 9135.

It is an arithmetic number, because the mean of its divisors is an integer number (1440992).

Almost surely, 2^40136460 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40136460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69167616).

40136460 is an abundant number, since it is smaller than the sum of its proper divisors (98198772).

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

40136460 is a wasteful number, since it uses less digits than its factorization.

40136460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7383 (or 7381 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40136460 is about 6335.3342453260. The cubic root of 40136460 is about 342.3836534507.

Adding to 40136460 its reverse (6463104), we get a palindrome (46599564).

The spelling of 40136460 in words is "forty million, one hundred thirty-six thousand, four hundred sixty".