40240704 has 112 divisors (see below), whose sum is σ = 123545600. Its totient is φ = 11321856.

The previous prime is 40240703. The next prime is 40240709. The reversal of 40240704 is 40704204.

40240704 is nontrivially palindromic in base 5.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (40240703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105987 + ... + 106365.

Almost surely, 2^40240704 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 40240704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61772800).

40240704 is an abundant number, since it is smaller than the sum of its proper divisors (83304896).

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

40240704 is a wasteful number, since it uses less digits than its factorization.

40240704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 40240704 is about 6343.5561004850. The cubic root of 40240704 is about 342.6798146496.

Adding to 40240704 its reverse (40704204), we get a palindrome (80944908).

The spelling of 40240704 in words is "forty million, two hundred forty thousand, seven hundred four".