40261782 has 24 divisors (see below), whose sum is σ = 88510968. Its totient is φ = 12200320.

The previous prime is 40261759. The next prime is 40261783. The reversal of 40261782 is 28716204.

It is a super-2 number, since 2×40261782² = 3242022179631048, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40261783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27003 + ... + 28454.

It is an arithmetic number, because the mean of its divisors is an integer number (3687957).

Almost surely, 2^40261782 is an apocalyptic number.

40261782 is an abundant number, since it is smaller than the sum of its proper divisors (48249186).

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

40261782 is a wasteful number, since it uses less digits than its factorization.

40261782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55484 (or 55473 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 40261782 is about 6345.2172539638. The cubic root of 40261782 is about 342.7396358725.

Adding to 40261782 its reverse (28716204), we get a palindrome (68977986).

The spelling of 40261782 in words is "forty million, two hundred sixty-one thousand, seven hundred eighty-two".