1258680 has 64 divisors (see below), whose sum is σ = 4004640. Its totient is φ = 315392.

The previous prime is 1258667. The next prime is 1258681. The reversal of 1258680 is 868521.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1258681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1732 + ... + 2348.

2^1258680 is an apocalyptic number.

1258680 is a gapful number since it is divisible by the number (10) 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 1258680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002320).

1258680 is an abundant number, since it is smaller than the sum of its proper divisors (2745960).

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

1258680 is a wasteful number, since it uses less digits than its factorization.

1258680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648 (or 644 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 1258680 is about 1121.9090872259. The cubic root of 1258680 is about 107.9704994872.

The spelling of 1258680 in words is "one million, two hundred fifty-eight thousand, six hundred eighty".