1520281028 has 12 divisors (see below), whose sum is σ = 3040562112. Its totient is φ = 651549000.

The previous prime is 1520281019. The next prime is 1520281031. The reversal of 1520281028 is 8201820251.

It is a happy number.

1520281028 is an admirable number.

It is a super-2 number, since 2×1520281028² = 4622508808193473568, which contains 22 as substring.

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, 27147848 + ... + 27147903.

It is an arithmetic number, because the mean of its divisors is an integer number (253380176).

Almost surely, 2^1520281028 is an apocalyptic number.

It is an amenable number.

1520281028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1520281028 is a wasteful number, since it uses less digits than its factorization.

1520281028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54295762 (or 54295760 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 1520281028 is about 38990.7813207173. The cubic root of 1520281028 is about 1149.8502711175.

The spelling of 1520281028 in words is "one billion, five hundred twenty million, two hundred eighty-one thousand, twenty-eight".