26390490 has 32 divisors (see below), whose sum is σ = 72385920. Its totient is φ = 6032064.

The previous prime is 26390479. The next prime is 26390501. The reversal of 26390490 is 9409362.

It is an interprime number because it is at equal distance from previous prime (26390479) and next prime (26390501).

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, 62625 + ... + 63044.

It is an arithmetic number, because the mean of its divisors is an integer number (2262060).

Almost surely, 2^26390490 is an apocalyptic number.

26390490 is an abundant number, since it is smaller than the sum of its proper divisors (45995430).

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

26390490 is a wasteful number, since it uses less digits than its factorization.

26390490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125686.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 26390490 is about 5137.1675074889. The cubic root of 26390490 is about 297.7253524058.

The spelling of 26390490 in words is "twenty-six million, three hundred ninety thousand, four hundred ninety".