1290250404 has 96 divisors (see below), whose sum is σ = 3549593600. Its totient is φ = 404157600.

The previous prime is 1290250373. The next prime is 1290250427. The reversal of 1290250404 is 4040520921.

1290250404 is a `hidden beast` number, since 1 + 2 + 9 + 0 + 250 + 404 = 666.

It is a super-2 number, since 2×1290250404² = 3329492210044326432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 258129 + ... + 263079.

Almost surely, 2^1290250404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290250404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1774796800).

1290250404 is an abundant number, since it is smaller than the sum of its proper divisors (2259343196).

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

1290250404 is a wasteful number, since it uses less digits than its factorization.

1290250404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5110 (or 5102 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1290250404 is about 35920.0557349234. The cubic root of 1290250404 is about 1088.6576647093.

The spelling of 1290250404 in words is "one billion, two hundred ninety million, two hundred fifty thousand, four hundred four".