1405768 has 32 divisors (see below), whose sum is σ = 3245760. Its totient is φ = 555840.

The previous prime is 1405759. The next prime is 1405769. The reversal of 1405768 is 8675041.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1405769) 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, 238 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (101430).

2^1405768 is an apocalyptic number.

It is an amenable number.

1405768 is an abundant number, since it is smaller than the sum of its proper divisors (1839992).

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

1405768 is a wasteful number, since it uses less digits than its factorization.

1405768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957 (or 1953 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 1405768 is about 1185.6508761014. The cubic root of 1405768 is about 112.0223169814.

It can be divided in two parts, 1 and 405768, that added together give a square (405769 = 637²).

The spelling of 1405768 in words is "one million, four hundred five thousand, seven hundred sixty-eight".