26490090 has 32 divisors (see below), whose sum is σ = 69356736. Its totient is φ = 6421760.

The previous prime is 26490083. The next prime is 26490119. The reversal of 26490090 is 9009462.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39807 + ... + 40466.

It is an arithmetic number, because the mean of its divisors is an integer number (2167398).

Almost surely, 2^26490090 is an apocalyptic number.

26490090 is an abundant number, since it is smaller than the sum of its proper divisors (42866646).

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

26490090 is a wasteful number, since it uses less digits than its factorization.

26490090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80294.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 26490090 is about 5146.8524361983. The cubic root of 26490090 is about 298.0994293079.

The spelling of 26490090 in words is "twenty-six million, four hundred ninety thousand, ninety".