1290260 has 12 divisors (see below), whose sum is σ = 2709588. Its totient is φ = 516096.

The previous prime is 1290259. The next prime is 1290287. The reversal of 1290260 is 620921.

It can be written as a sum of positive squares in 2 ways, for example, as 364816 + 925444 = 604^2 + 962^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 64513 = 1290260 / (1 + 2 + 9 + 0 + 2 + 6 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32237 + ... + 32276.

It is an arithmetic number, because the mean of its divisors is an integer number (225799).

2^1290260 is an apocalyptic number.

1290260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1290260 is an abundant number, since it is smaller than the sum of its proper divisors (1419328).

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

1290260 is a wasteful number, since it uses less digits than its factorization.

1290260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64522 (or 64520 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 1290260 is about 1135.8961220112. The cubic root of 1290260 is about 108.8660363600.

The spelling of 1290260 in words is "one million, two hundred ninety thousand, two hundred sixty".