1156072 has 32 divisors (see below), whose sum is σ = 2321280. Its totient is φ = 538560.

The previous prime is 1156039. The next prime is 1156073. The reversal of 1156072 is 2706511.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11173 + ... + 11275.

It is an arithmetic number, because the mean of its divisors is an integer number (72540).

2^1156072 is an apocalyptic number.

It is an amenable number.

1156072 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1156072 is a wasteful number, since it uses less digits than its factorization.

1156072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 1156072 is about 1075.2078868758. The cubic root of 1156072 is about 104.9530250948.

The spelling of 1156072 in words is "one million, one hundred fifty-six thousand, seventy-two".