1551050028 has 144 divisors (see below), whose sum is σ = 4528218240. Its totient is φ = 442713600.

The previous prime is 1551050023. The next prime is 1551050089. The reversal of 1551050028 is 8200501551.

1551050028 is a `hidden beast` number, since 155 + 1 + 0 + 500 + 2 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1551049983 and 1551050010.

It is not an unprimeable number, because it can be changed into a prime (1551050023) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1587076 + ... + 1588052.

It is an arithmetic number, because the mean of its divisors is an integer number (31445960).

Almost surely, 2^1551050028 is an apocalyptic number.

1551050028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1551050028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2264109120).

1551050028 is an abundant number, since it is smaller than the sum of its proper divisors (2977168212).

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

1551050028 is a wasteful number, since it uses less digits than its factorization.

1551050028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228 (or 1223 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

The square root of 1551050028 is about 39383.3724812896. The cubic root of 1551050028 is about 1157.5557998125. Note that the first 3 decimals are identical.

Adding to 1551050028 its reverse (8200501551), we get a palindrome (9751551579).

The spelling of 1551050028 in words is "one billion, five hundred fifty-one million, fifty thousand, twenty-eight".