26661950 has 48 divisors (see below), whose sum is σ = 60022944. Its totient is φ = 8601600.

The previous prime is 26661949. The next prime is 26661979. The reversal of 26661950 is 5916662.

It is a happy number.

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 26661950.

It is a congruent number.

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, 3710 + ... + 8190.

It is an arithmetic number, because the mean of its divisors is an integer number (1250478).

Almost surely, 2^26661950 is an apocalyptic number.

26661950 is an abundant number, since it is smaller than the sum of its proper divisors (33360994).

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

26661950 is a wasteful number, since it uses less digits than its factorization.

26661950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4517 (or 4512 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 26661950 is about 5163.5210854610. The cubic root of 26661950 is about 298.7427009882.

It can be divided in two parts, 2666 and 1950, that multiplied together give a triangular number (5198700 = T₃₂₂₄).

The spelling of 26661950 in words is "twenty-six million, six hundred sixty-one thousand, nine hundred fifty".