40626240 has 112 divisors (see below), whose sum is σ = 130576320. Its totient is φ = 10700800.

The previous prime is 40626221. The next prime is 40626247. The reversal of 40626240 is 4262604.

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

It is a self number, because there is not a number n which added to its sum of digits gives 40626240.

It is not an unprimeable number, because it can be changed into a prime (40626247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96751 + ... + 97169.

It is an arithmetic number, because the mean of its divisors is an integer number (1165860).

Almost surely, 2^40626240 is an apocalyptic number.

40626240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40626240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65288160).

40626240 is an abundant number, since it is smaller than the sum of its proper divisors (89950080).

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

40626240 is a wasteful number, since it uses less digits than its factorization.

40626240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 40626240 is about 6373.8716648517. The cubic root of 40626240 is about 343.7707143440.

Adding to 40626240 its reverse (4262604), we get a palindrome (44888844).

The spelling of 40626240 in words is "forty million, six hundred twenty-six thousand, two hundred forty".