1013720 has 16 divisors (see below), whose sum is σ = 2280960. Its totient is φ = 405472.

The previous prime is 1013717. The next prime is 1013729. The reversal of 1013720 is 273101.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1013695 and 1013704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12632 + ... + 12711.

It is an arithmetic number, because the mean of its divisors is an integer number (142560).

2^1013720 is an apocalyptic number.

1013720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013720 is an abundant number, since it is smaller than the sum of its proper divisors (1267240).

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

1013720 is a wasteful number, since it uses less digits than its factorization.

1013720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25354 (or 25350 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 14.

The square root of 1013720 is about 1006.8366302435. The cubic root of 1013720 is about 100.4552575934.

Adding to 1013720 its reverse (273101), we get a palindrome (1286821).

The spelling of 1013720 in words is "one million, thirteen thousand, seven hundred twenty".