26983530 has 80 divisors (see below), whose sum is σ = 82938240. Its totient is φ = 6166368.

The previous prime is 26983529. The next prime is 26983571. The reversal of 26983530 is 3538962.

It is a super-2 number, since 2×26983530² = 1456221782521800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3291 + ... + 8049.

It is an arithmetic number, because the mean of its divisors is an integer number (1036728).

Almost surely, 2^26983530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26983530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41469120).

26983530 is an abundant number, since it is smaller than the sum of its proper divisors (55954710).

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

26983530 is a wasteful number, since it uses less digits than its factorization.

26983530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785 (or 4776 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 26983530 is about 5194.5673544579. The cubic root of 26983530 is about 299.9389875925.

The spelling of 26983530 in words is "twenty-six million, nine hundred eighty-three thousand, five hundred thirty".