26640532 has 24 divisors (see below), whose sum is σ = 50222592. Its totient is φ = 12328800.

The previous prime is 26640511. The next prime is 26640533. The reversal of 26640532 is 23504662.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 26640532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26640533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1819 + ... + 7522.

It is an arithmetic number, because the mean of its divisors is an integer number (2092608).

Almost surely, 2^26640532 is an apocalyptic number.

It is an amenable number.

26640532 is a deficient number, since it is larger than the sum of its proper divisors (23582060).

26640532 is a wasteful number, since it uses less digits than its factorization.

26640532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9399 (or 9397 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 26640532 is about 5161.4466964215. The cubic root of 26640532 is about 298.6626845194.

It can be divided in two parts, 26640 and 532, that added together give a palindrome (27172).

The spelling of 26640532 in words is "twenty-six million, six hundred forty thousand, five hundred thirty-two".