26487972 has 144 divisors (see below), whose sum is σ = 84389760. Its totient is φ = 7091712.

The previous prime is 26487971. The next prime is 26487997. The reversal of 26487972 is 27978462.

It is a super-2 number, since 2×26487972² = 1403225321345568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26487971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 115554 + ... + 115782.

It is an arithmetic number, because the mean of its divisors is an integer number (586040).

Almost surely, 2^26487972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26487972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42194880).

26487972 is an abundant number, since it is smaller than the sum of its proper divisors (57901788).

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

26487972 is a wasteful number, since it uses less digits than its factorization.

26487972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272 (or 258 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 26487972 is about 5146.6466752634. The cubic root of 26487972 is about 298.0914843063.

The spelling of 26487972 in words is "twenty-six million, four hundred eighty-seven thousand, nine hundred seventy-two".