26372780 has 72 divisors (see below), whose sum is σ = 68257728. Its totient is φ = 8504832.

The previous prime is 26372771. The next prime is 26372791. The reversal of 26372780 is 8727362.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 26372780.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15869 + ... + 17451.

It is an arithmetic number, because the mean of its divisors is an integer number (948024).

Almost surely, 2^26372780 is an apocalyptic number.

26372780 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 26372780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34128864).

26372780 is an abundant number, since it is smaller than the sum of its proper divisors (41884948).

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

26372780 is a wasteful number, since it uses less digits than its factorization.

26372780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623 (or 1614 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 26372780 is about 5135.4435056770. The cubic root of 26372780 is about 297.6587388151.

The spelling of 26372780 in words is "twenty-six million, three hundred seventy-two thousand, seven hundred eighty".