26428990 has 16 divisors (see below), whose sum is σ = 54368352. Its totient is φ = 9061344.

The previous prime is 26428949. The next prime is 26429009. The reversal of 26428990 is 9982462.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188709 + ... + 188848.

It is an arithmetic number, because the mean of its divisors is an integer number (3398022).

Almost surely, 2^26428990 is an apocalyptic number.

26428990 is an abundant number, since it is smaller than the sum of its proper divisors (27939362).

26428990 is a wasteful number, since it uses less digits than its factorization.

26428990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377571.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 26428990 is about 5140.9133429771. The cubic root of 26428990 is about 297.8700618139.

The spelling of 26428990 in words is "twenty-six million, four hundred twenty-eight thousand, nine hundred ninety".