26990840 has 16 divisors (see below), whose sum is σ = 60729480. Its totient is φ = 10796320.

The previous prime is 26990837. The next prime is 26990861. The reversal of 26990840 is 4809962.

It is a junction number, because it is equal to n+sod(n) for n = 26990794 and 26990803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337346 + ... + 337425.

Almost surely, 2^26990840 is an apocalyptic number.

26990840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26990840 is an abundant number, since it is smaller than the sum of its proper divisors (33738640).

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

26990840 is a wasteful number, since it uses less digits than its factorization.

26990840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674782 (or 674778 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 26990840 is about 5195.2709265254. The cubic root of 26990840 is about 299.9660702368.

The spelling of 26990840 in words is "twenty-six million, nine hundred ninety thousand, eight hundred forty".