26478550 has 24 divisors (see below), whose sum is σ = 56286576. Its totient is φ = 9078240.

The previous prime is 26478547. The next prime is 26478559. The reversal of 26478550 is 5587462.

It is a happy number.

It is a super-2 number, since 2×26478550² = 1402227220205000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26478559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37477 + ... + 38176.

It is an arithmetic number, because the mean of its divisors is an integer number (2345274).

Almost surely, 2^26478550 is an apocalyptic number.

26478550 is an abundant number, since it is smaller than the sum of its proper divisors (29808026).

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

26478550 is a wasteful number, since it uses less digits than its factorization.

26478550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75672 (or 75667 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 26478550 is about 5145.7312405527. The cubic root of 26478550 is about 298.0561355444.

It can be divided in two parts, 26478 and 550, that added together give a triangular number (27028 = T₂₃₂).

The spelling of 26478550 in words is "twenty-six million, four hundred seventy-eight thousand, five hundred fifty".