26421030 has 96 divisors (see below), whose sum is σ = 72783360. Its totient is φ = 6639360.

The previous prime is 26421029. The next prime is 26421037. The reversal of 26421030 is 3012462.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 26420994 and 26421012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26421037) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138235 + ... + 138425.

It is an arithmetic number, because the mean of its divisors is an integer number (758160).

Almost surely, 2^26421030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26421030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36391680).

26421030 is an abundant number, since it is smaller than the sum of its proper divisors (46362330).

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

26421030 is a wasteful number, since it uses less digits than its factorization.

26421030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 26421030 is about 5140.1391031761. The cubic root of 26421030 is about 297.8401542039.

Adding to 26421030 its reverse (3012462), we get a palindrome (29433492).

The spelling of 26421030 in words is "twenty-six million, four hundred twenty-one thousand, thirty".