26416890 has 48 divisors (see below), whose sum is σ = 70549128. Its totient is φ = 6853248.

The previous prime is 26416879. The next prime is 26416919. The reversal of 26416890 is 9861462.

26416890 is a `hidden beast` number, since 2 + 641 + 6 + 8 + 9 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 23357889 + 3059001 = 4833^2 + 1749^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637 + ... + 7296.

Almost surely, 2^26416890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26416890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35274564).

26416890 is an abundant number, since it is smaller than the sum of its proper divisors (44132238).

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

26416890 is a wasteful number, since it uses less digits than its factorization.

26416890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7983 (or 7980 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 26416890 is about 5139.7363745624. The cubic root of 26416890 is about 297.8245968664.

The spelling of 26416890 in words is "twenty-six million, four hundred sixteen thousand, eight hundred ninety".