1352640 has 56 divisors (see below), whose sum is σ = 4297680. Its totient is φ = 360448.

The previous prime is 1352627. The next prime is 1352641. The reversal of 1352640 is 462531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352641) 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, 256 + ... + 1664.

2^1352640 is an apocalyptic number.

1352640 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 1352640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2148840).

1352640 is an abundant number, since it is smaller than the sum of its proper divisors (2945040).

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

1352640 is a wasteful number, since it uses less digits than its factorization.

1352640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1429 (or 1419 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1352640 is about 1163.0305241050. The cubic root of 1352640 is about 110.5929413313.

It can be divided in two parts, 135 and 2640, that added together give a triangular number (2775 = T₇₄).

The spelling of 1352640 in words is "one million, three hundred fifty-two thousand, six hundred forty".