26670420 has 144 divisors (see below), whose sum is σ = 94243968. Its totient is φ = 5978880.

The previous prime is 26670407. The next prime is 26670431. The reversal of 26670420 is 2407662.

It is a super-2 number, since 2×26670420² = 1422622605952800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76687 + ... + 77033.

It is an arithmetic number, because the mean of its divisors is an integer number (654472).

Almost surely, 2^26670420 is an apocalyptic number.

26670420 is a gapful number since it is divisible by the number (20) 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 26670420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47121984).

26670420 is an abundant number, since it is smaller than the sum of its proper divisors (67573548).

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

26670420 is a wasteful number, since it uses less digits than its factorization.

26670420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 26670420 is about 5164.3411970938. The cubic root of 26670420 is about 298.7743326178.

The spelling of 26670420 in words is "twenty-six million, six hundred seventy thousand, four hundred twenty".