1290886422 has 16 divisors (see below), whose sum is σ = 2950597632. Its totient is φ = 368824680.

The previous prime is 1290886417. The next prime is 1290886423. The reversal of 1290886422 is 2246880921.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 30735391 = 1290886422 / (1 + 2 + 9 + 0 + 8 + 8 + 6 + 4 + 2 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290886423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15367654 + ... + 15367737.

It is an arithmetic number, because the mean of its divisors is an integer number (184412352).

Almost surely, 2^1290886422 is an apocalyptic number.

1290886422 is an abundant number, since it is smaller than the sum of its proper divisors (1659711210).

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

1290886422 is a wasteful number, since it uses less digits than its factorization.

1290886422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30735403.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1290886422 is about 35928.9078876606. The cubic root of 1290886422 is about 1088.8365168473.

The spelling of 1290886422 in words is "one billion, two hundred ninety million, eight hundred eighty-six thousand, four hundred twenty-two".