181012028 has 12 divisors (see below), whose sum is σ = 317198112. Its totient is φ = 90384000.

The previous prime is 181012019. The next prime is 181012057. The reversal of 181012028 is 820210181.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 181011994 and 181012012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27125 + ... + 33132.

It is an arithmetic number, because the mean of its divisors is an integer number (26433176).

Almost surely, 2^181012028 is an apocalyptic number.

It is an amenable number.

181012028 is a deficient number, since it is larger than the sum of its proper divisors (136186084).

181012028 is a wasteful number, since it uses less digits than its factorization.

181012028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61012 (or 61010 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 23.

The square root of 181012028 is about 13454.0710567471. The cubic root of 181012028 is about 565.6778123637.

The spelling of 181012028 in words is "one hundred eighty-one million, twelve thousand, twenty-eight".