26223890 has 32 divisors (see below), whose sum is σ = 58852224. Its totient is φ = 8173440.

The previous prime is 26223871. The next prime is 26223913. The reversal of 26223890 is 9832262.

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, 16259 + ... + 17798.

It is an arithmetic number, because the mean of its divisors is an integer number (1839132).

Almost surely, 2^26223890 is an apocalyptic number.

26223890 is an abundant number, since it is smaller than the sum of its proper divisors (32628334).

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

26223890 is a wasteful number, since it uses less digits than its factorization.

26223890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34082.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 26223890 is about 5120.9266739527. The cubic root of 26223890 is about 297.0975279323.

The spelling of 26223890 in words is "twenty-six million, two hundred twenty-three thousand, eight hundred ninety".