26971980 has 96 divisors (see below), whose sum is σ = 87091200. Its totient is φ = 6109440.

The previous prime is 26971951. The next prime is 26971981. The reversal of 26971980 is 8917962.

It is a super-4 number, since 4×26971980⁴ (a number of 31 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (26971981) 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, 62365 + ... + 62795.

It is an arithmetic number, because the mean of its divisors is an integer number (907200).

Almost surely, 2^26971980 is an apocalyptic number.

26971980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26971980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43545600).

26971980 is an abundant number, since it is smaller than the sum of its proper divisors (60119220).

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

26971980 is a wasteful number, since it uses less digits than its factorization.

26971980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 26971980 is about 5193.4554970655. The cubic root of 26971980 is about 299.8961863021.

The spelling of 26971980 in words is "twenty-six million, nine hundred seventy-one thousand, nine hundred eighty".