26722420 has 12 divisors (see below), whose sum is σ = 56117124. Its totient is φ = 10688960.

The previous prime is 26722411. The next prime is 26722429. The reversal of 26722420 is 2422762.

It is an interprime number because it is at equal distance from previous prime (26722411) and next prime (26722429).

It can be written as a sum of positive squares in 2 ways, for example, as 11009124 + 15713296 = 3318^2 + 3964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26722429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 668041 + ... + 668080.

It is an arithmetic number, because the mean of its divisors is an integer number (4676427).

Almost surely, 2^26722420 is an apocalyptic number.

26722420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26722420 is an abundant number, since it is smaller than the sum of its proper divisors (29394704).

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

26722420 is a wasteful number, since it uses less digits than its factorization.

26722420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336130 (or 1336128 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 26722420 is about 5169.3732695560. The cubic root of 26722420 is about 298.9683825436.

The spelling of 26722420 in words is "twenty-six million, seven hundred twenty-two thousand, four hundred twenty".