1364820 has 72 divisors (see below), whose sum is σ = 4087776. Its totient is φ = 340032.

The previous prime is 1364809. The next prime is 1364821. The reversal of 1364820 is 284631.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1364821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31719 + ... + 31761.

2^1364820 is an apocalyptic number.

1364820 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 1364820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2043888).

1364820 is an abundant number, since it is smaller than the sum of its proper divisors (2722956).

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

1364820 is a wasteful number, since it uses less digits than its factorization.

1364820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 76 counting only the distinct ones).

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

The square root of 1364820 is about 1168.2551091264. The cubic root of 1364820 is about 110.9238988152.

The spelling of 1364820 in words is "one million, three hundred sixty-four thousand, eight hundred twenty".