28894430625316 has 9 divisors (see below), whose sum is σ = 50565272408049. Its totient is φ = 14447209937304.

The previous prime is 28894430625301. The next prime is 28894430625353. The reversal of 28894430625316 is 61352603449882.

It is a happy number.

The square root of 28894430625316 is 5375354.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 345755760100 + 28548674865216 = 588010^2 + 5343096^2 .

It is a super-2 number, since 2×28894430625316² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 9406870 + ... + 12094546.

Almost surely, 2^{28894430625316} is an apocalyptic number.

28894430625316 is the 5375354-th square number.

It is an amenable number.

28894430625316 is a deficient number, since it is larger than the sum of its proper divisors (21670841782733).

28894430625316 is an frugal number, since it uses more digits than its factorization.

28894430625316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5375358 (or 2687679 counting only the distinct ones).

The product of its (nonzero) digits is 59719680, while the sum is 61.

The spelling of 28894430625316 in words is "twenty-eight trillion, eight hundred ninety-four billion, four hundred thirty million, six hundred twenty-five thousand, three hundred sixteen".