26145660 has 48 divisors (see below), whose sum is σ = 77517216. Its totient is φ = 6561792.

The previous prime is 26145599. The next prime is 26145661. The reversal of 26145660 is 6654162.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26145661) 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, 11797 + ... + 13836.

It is an arithmetic number, because the mean of its divisors is an integer number (1614942).

Almost surely, 2^26145660 is an apocalyptic number.

26145660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26145660 is an abundant number, since it is smaller than the sum of its proper divisors (51371556).

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

26145660 is a wasteful number, since it uses less digits than its factorization.

26145660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25662 (or 25660 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 26145660 is about 5113.2827029219. The cubic root of 26145660 is about 296.8018040784.

The spelling of 26145660 in words is "twenty-six million, one hundred forty-five thousand, six hundred sixty".