1113720 has 32 divisors (see below), whose sum is σ = 3341520. Its totient is φ = 296960.

The previous prime is 1113719. The next prime is 1113751. The reversal of 1113720 is 273111.

1113720 = 6² + 7² + ... + 149².

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1113720.

It is a congruent number.

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, 4521 + ... + 4760.

2^1113720 is an apocalyptic number.

1113720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113720 is an abundant number, since it is smaller than the sum of its proper divisors (2227800).

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

1113720 is a wasteful number, since it uses less digits than its factorization.

1113720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9295 (or 9291 counting only the distinct ones).

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 1113720 is about 1055.3293324835. The cubic root of 1113720 is about 103.6554177451.

Adding to 1113720 its reverse (273111), we get a palindrome (1386831).

It can be divided in two parts, 11 and 13720, that added together give a palindrome (13731).

The spelling of 1113720 in words is "one million, one hundred thirteen thousand, seven hundred twenty".