26023890 has 16 divisors (see below), whose sum is σ = 62457408. Its totient is φ = 6939696.

The previous prime is 26023861. The next prime is 26023919. The reversal of 26023890 is 9832062.

It is an interprime number because it is at equal distance from previous prime (26023861) and next prime (26023919).

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 867463 = 26023890 / (2 + 6 + 0 + 2 + 3 + 8 + 9 + 0).

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, 433702 + ... + 433761.

It is an arithmetic number, because the mean of its divisors is an integer number (3903588).

Almost surely, 2^26023890 is an apocalyptic number.

26023890 is an abundant number, since it is smaller than the sum of its proper divisors (36433518).

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

26023890 is a wasteful number, since it uses less digits than its factorization.

26023890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867473.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 26023890 is about 5101.3615829502. The cubic root of 26023890 is about 296.3403150014.

The spelling of 26023890 in words is "twenty-six million, twenty-three thousand, eight hundred ninety".