28515015030 has 32 divisors (see below), whose sum is σ = 69399929088. Its totient is φ = 7496904800.

The previous prime is 28515015007. The next prime is 28515015037. The reversal of 28515015030 is 3051051582.

It is a super-2 number, since 2×28515015030² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28515015037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6691536 + ... + 6695795.

It is an arithmetic number, because the mean of its divisors is an integer number (2168747784).

Almost surely, 2^28515015030 is an apocalyptic number.

28515015030 is an abundant number, since it is smaller than the sum of its proper divisors (40884914058).

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

28515015030 is a wasteful number, since it uses less digits than its factorization.

28515015030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13387412.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 28515015030 in words is "twenty-eight billion, five hundred fifteen million, fifteen thousand, thirty".