26429490 has 80 divisors (see below), whose sum is σ = 72274752. Its totient is φ = 6928416.

The previous prime is 26429489. The next prime is 26429503. The reversal of 26429490 is 9492462.

26429490 is a `hidden beast` number, since 2 + 642 + 9 + 4 + 9 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 54027 + ... + 54513.

Almost surely, 2^26429490 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26429490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36137376).

26429490 is an abundant number, since it is smaller than the sum of its proper divisors (45845262).

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

26429490 is a wasteful number, since it uses less digits than its factorization.

26429490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 26429490 is about 5140.9619722383. The cubic root of 26429490 is about 297.8719402321.

The spelling of 26429490 in words is "twenty-six million, four hundred twenty-nine thousand, four hundred ninety".