26515216 has 40 divisors (see below), whose sum is σ = 63232064. Its totient is φ = 10488960.

The previous prime is 26515213. The next prime is 26515217. The reversal of 26515216 is 61251562.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (26515213) 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, 7650 + ... + 10561.

Almost surely, 2^26515216 is an apocalyptic number.

26515216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

26515216 is an abundant number, since it is smaller than the sum of its proper divisors (36716848).

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

26515216 is a wasteful number, since it uses less digits than its factorization.

26515216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18239 (or 18233 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 26515216 is about 5149.2927669730. The cubic root of 26515216 is about 298.1936491890.

Adding to 26515216 its reverse (61251562), we get a palindrome (87766778).

The spelling of 26515216 in words is "twenty-six million, five hundred fifteen thousand, two hundred sixteen".