1290464 has 36 divisors (see below), whose sum is σ = 2958984. Its totient is φ = 552384.

The previous prime is 1290463. The next prime is 1290467. The reversal of 1290464 is 4640921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1290463) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1157 + ... + 1979.

It is an arithmetic number, because the mean of its divisors is an integer number (82194).

2^1290464 is an apocalyptic number.

1290464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1290464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1479492).

1290464 is an abundant number, since it is smaller than the sum of its proper divisors (1668520).

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

1290464 is an equidigital number, since it uses as much as digits as its factorization.

1290464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1290464 is about 1135.9859154056. The cubic root of 1290464 is about 108.8717735760.

The spelling of 1290464 in words is "one million, two hundred ninety thousand, four hundred sixty-four".