26621028 has 96 divisors (see below), whose sum is σ = 82360320. Its totient is φ = 7270560.

The previous prime is 26621009. The next prime is 26621029. The reversal of 26621028 is 82012662.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 26620992 and 26621010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26621029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16623 + ... + 18153.

It is an arithmetic number, because the mean of its divisors is an integer number (857920).

Almost surely, 2^26621028 is an apocalyptic number.

26621028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26621028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41180160).

26621028 is an abundant number, since it is smaller than the sum of its proper divisors (55739292).

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

26621028 is a wasteful number, since it uses less digits than its factorization.

26621028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1574 (or 1566 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 26621028 is about 5159.5569577242. The cubic root of 26621028 is about 298.5897813315.

The spelling of 26621028 in words is "twenty-six million, six hundred twenty-one thousand, twenty-eight".