26680890 has 16 divisors (see below), whose sum is σ = 64034208. Its totient is φ = 7114896.

The previous prime is 26680861. The next prime is 26680891. The reversal of 26680890 is 9808662.

It is not an unprimeable number, because it can be changed into a prime (26680891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444652 + ... + 444711.

It is an arithmetic number, because the mean of its divisors is an integer number (4002138).

Almost surely, 2^26680890 is an apocalyptic number.

26680890 is an abundant number, since it is smaller than the sum of its proper divisors (37353318).

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

26680890 is a wasteful number, since it uses less digits than its factorization.

26680890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889373.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 26680890 is about 5165.3547796836. The cubic root of 26680890 is about 298.8134240908.

The spelling of 26680890 in words is "twenty-six million, six hundred eighty thousand, eight hundred ninety".