40263720 has 64 divisors (see below), whose sum is σ = 138049920. Its totient is φ = 9202944.

The previous prime is 40263719. The next prime is 40263737. The reversal of 40263720 is 2736204.

40263720 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23127 + ... + 24806.

It is an arithmetic number, because the mean of its divisors is an integer number (2157030).

Almost surely, 2^40263720 is an apocalyptic number.

40263720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40263720 is an abundant number, since it is smaller than the sum of its proper divisors (97786200).

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

40263720 is a wasteful number, since it uses less digits than its factorization.

40263720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47954 (or 47950 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 40263720 is about 6345.3699655733. The cubic root of 40263720 is about 342.7451350392.

Adding to 40263720 its reverse (2736204), we get a palindrome (42999924).

The spelling of 40263720 in words is "forty million, two hundred sixty-three thousand, seven hundred twenty".