26514640 has 40 divisors (see below), whose sum is σ = 61924608. Its totient is φ = 10558080.

The previous prime is 26514637. The next prime is 26514643. The reversal of 26514640 is 4641562.

It is an interprime number because it is at equal distance from previous prime (26514637) and next prime (26514643).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×26514640² = 1406052268659200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26514599 and 26514608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26514643) 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, 21069 + ... + 22291.

Almost surely, 2^26514640 is an apocalyptic number.

26514640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26514640 is an abundant number, since it is smaller than the sum of its proper divisors (35409968).

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

26514640 is a wasteful number, since it uses less digits than its factorization.

26514640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 26514640 is about 5149.2368366584. The cubic root of 26514640 is about 298.1914899158.

The spelling of 26514640 in words is "twenty-six million, five hundred fourteen thousand, six hundred forty".