1333780 has 36 divisors (see below), whose sum is σ = 3260628. Its totient is φ = 456960.

The previous prime is 1333777. The next prime is 1333799. The reversal of 1333780 is 873331.

It can be written as a sum of positive squares in 2 ways, for example, as 345744 + 988036 = 588^2 + 994^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 300 + ... + 1660.

It is an arithmetic number, because the mean of its divisors is an integer number (90573).

2^1333780 is an apocalyptic number.

1333780 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 1333780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1630314).

1333780 is an abundant number, since it is smaller than the sum of its proper divisors (1926848).

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

1333780 is a wasteful number, since it uses less digits than its factorization.

1333780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384 (or 1375 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 1333780 is about 1154.8939345239. The cubic root of 1333780 is about 110.0765307646.

The spelling of 1333780 in words is "one million, three hundred thirty-three thousand, seven hundred eighty".