40261500 has 144 divisors (see below), whose sum is σ = 132874560. Its totient is φ = 10243200.

The previous prime is 40261453. The next prime is 40261531. The reversal of 40261500 is 516204.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 103306 + ... + 103694.

It is an arithmetic number, because the mean of its divisors is an integer number (922740).

Almost surely, 2^40261500 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 40261500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66437280).

40261500 is an abundant number, since it is smaller than the sum of its proper divisors (92613060).

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

40261500 is a wasteful number, since it uses less digits than its factorization.

40261500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40261500 is about 6345.1950324635. The cubic root of 40261500 is about 342.7388356694.

Adding to 40261500 its reverse (516204), we get a palindrome (40777704).

The spelling of 40261500 in words is "forty million, two hundred sixty-one thousand, five hundred".