26490020 has 24 divisors (see below), whose sum is σ = 58048704. Its totient is φ = 10135136.

The previous prime is 26490019. The next prime is 26490053. The reversal of 26490020 is 2009462.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28334 + ... + 29253.

It is an arithmetic number, because the mean of its divisors is an integer number (2418696).

Almost surely, 2^26490020 is an apocalyptic number.

26490020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26490020 is an abundant number, since it is smaller than the sum of its proper divisors (31558684).

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

26490020 is a wasteful number, since it uses less digits than its factorization.

26490020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57619 (or 57617 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 26490020 is about 5146.8456359211. The cubic root of 26490020 is about 298.0991667320.

Adding to 26490020 its reverse (2009462), we get a palindrome (28499482).

The spelling of 26490020 in words is "twenty-six million, four hundred ninety thousand, twenty".