155012028 has 48 divisors (see below), whose sum is σ = 378685440. Its totient is φ = 49291200.

The previous prime is 155012023. The next prime is 155012029. The reversal of 155012028 is 820210551.

155012028 is a nontrivial binomial coefficient, being equal to C(17608, 2).

It is a junction number, because it is equal to n+sod(n) for n = 155011989 and 155012007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155012023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23478 + ... + 29346.

It is an arithmetic number, because the mean of its divisors is an integer number (7889280).

Almost surely, 2^155012028 is an apocalyptic number.

155012028 is the 17607-th triangular number and also the 8804-th hexagonal number.

It is an amenable number.

155012028 is an abundant number, since it is smaller than the sum of its proper divisors (223673412).

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

155012028 is a wasteful number, since it uses less digits than its factorization.

155012028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5978 (or 5976 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 24.

The square root of 155012028 is about 12450.3826447222. The cubic root of 155012028 is about 537.1824298945.

Adding to 155012028 its reverse (820210551), we get a palindrome (975222579).

The spelling of 155012028 in words is "one hundred fifty-five million, twelve thousand, twenty-eight".