26430500 has 24 divisors (see below), whose sum is σ = 57725304. Its totient is φ = 10572000.

The previous prime is 26430499. The next prime is 26430511. The reversal of 26430500 is 503462.

It can be written as a sum of positive squares in 4 ways, for example, as 440896 + 25989604 = 664^2 + 5098^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 25931 + ... + 26930.

It is an arithmetic number, because the mean of its divisors is an integer number (2405221).

Almost surely, 2^26430500 is an apocalyptic number.

26430500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26430500 is an abundant number, since it is smaller than the sum of its proper divisors (31294804).

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

26430500 is a wasteful number, since it uses less digits than its factorization.

26430500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52880 (or 52868 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 26430500 is about 5141.0602019428. The cubic root of 26430500 is about 297.8757345647.

Adding to 26430500 its reverse (503462), we get a palindrome (26933962).

The spelling of 26430500 in words is "twenty-six million, four hundred thirty thousand, five hundred".