1368240 has 40 divisors (see below), whose sum is σ = 4242288. Its totient is φ = 364800.

The previous prime is 1368233. The next prime is 1368251. The reversal of 1368240 is 428631.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1368240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2611 + ... + 3090.

2^1368240 is an apocalyptic number.

1368240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1368240 is an abundant number, since it is smaller than the sum of its proper divisors (2874048).

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

1368240 is a wasteful number, since it uses less digits than its factorization.

1368240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5717 (or 5711 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1368240 is about 1169.7179147128. The cubic root of 1368240 is about 111.0164734904.

The spelling of 1368240 in words is "one million, three hundred sixty-eight thousand, two hundred forty".