1115972 has 24 divisors (see below), whose sum is σ = 2295552. Its totient is φ = 468000.

The previous prime is 1115941. The next prime is 1115987. The reversal of 1115972 is 2795111.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404 + ... + 1547.

It is an arithmetic number, because the mean of its divisors is an integer number (95648).

2^1115972 is an apocalyptic number.

It is an amenable number.

1115972 is an abundant number, since it is smaller than the sum of its proper divisors (1179580).

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

1115972 is a wasteful number, since it uses less digits than its factorization.

1115972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979 (or 1977 counting only the distinct ones).

The product of its digits is 630, while the sum is 26.

The square root of 1115972 is about 1056.3957591736. The cubic root of 1115972 is about 103.7252362632.

The spelling of 1115972 in words is "one million, one hundred fifteen thousand, nine hundred seventy-two".