1257464 has 32 divisors (see below), whose sum is σ = 2585520. Its totient is φ = 569856.

The previous prime is 1257463. The next prime is 1257491. The reversal of 1257464 is 4647521.

It is a super-2 number, since 2×1257464² = 3162431422592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11072 + ... + 11184.

2^1257464 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 1257464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1292760).

1257464 is an abundant number, since it is smaller than the sum of its proper divisors (1328056).

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

1257464 is a wasteful number, since it uses less digits than its factorization.

1257464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 235 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 1257464 is about 1121.3670228788. The cubic root of 1257464 is about 107.9357184917.

The spelling of 1257464 in words is "one million, two hundred fifty-seven thousand, four hundred sixty-four".