26898870 has 64 divisors (see below), whose sum is σ = 69672960. Its totient is φ = 6624000.

The previous prime is 26898869. The next prime is 26898871. The reversal of 26898870 is 7889862.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26898869) and next prime (26898871).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26898871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22795 + ... + 23945.

It is an arithmetic number, because the mean of its divisors is an integer number (1088640).

Almost surely, 2^26898870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26898870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34836480).

26898870 is an abundant number, since it is smaller than the sum of its proper divisors (42774090).

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

26898870 is a wasteful number, since it uses less digits than its factorization.

26898870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 26898870 is about 5186.4120545903. The cubic root of 26898870 is about 299.6249758294.

The spelling of 26898870 in words is "twenty-six million, eight hundred ninety-eight thousand, eight hundred seventy".