26291040 has 48 divisors (see below), whose sum is σ = 82818288. Its totient is φ = 7010816.

The previous prime is 26291033. The next prime is 26291051. The reversal of 26291040 is 4019262.

It is a tau number, because it is divible by the number of its divisors (48).

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 26291040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26907 + ... + 27866.

It is an arithmetic number, because the mean of its divisors is an integer number (1725381).

Almost surely, 2^26291040 is an apocalyptic number.

26291040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26291040 is an abundant number, since it is smaller than the sum of its proper divisors (56527248).

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

26291040 is a wasteful number, since it uses less digits than its factorization.

26291040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54791 (or 54783 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 26291040 is about 5127.4789126821. The cubic root of 26291040 is about 297.3508986162.

The spelling of 26291040 in words is "twenty-six million, two hundred ninety-one thousand, forty".