1290066450 has 96 divisors (see below), whose sum is σ = 3357106560. Its totient is φ = 327398400.

The previous prime is 1290066433. The next prime is 1290066467. The reversal of 1290066450 is 546600921.

It is an interprime number because it is at equal distance from previous prime (1290066433) and next prime (1290066467).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 306762 + ... + 310938.

It is an arithmetic number, because the mean of its divisors is an integer number (34969860).

Almost surely, 2^1290066450 is an apocalyptic number.

1290066450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290066450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1678553280).

1290066450 is an abundant number, since it is smaller than the sum of its proper divisors (2067040110).

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

1290066450 is a wasteful number, since it uses less digits than its factorization.

1290066450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292 (or 4287 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 1290066450 is about 35917.4950407180. The cubic root of 1290066450 is about 1088.6059247655.

The spelling of 1290066450 in words is "one billion, two hundred ninety million, sixty-six thousand, four hundred fifty".