28873144287430 has 32 divisors (see below), whose sum is σ = 52953180988608. Its totient is φ = 11331149481600.

The previous prime is 28873144287397. The next prime is 28873144287431. The reversal of 28873144287430 is 3478244137882.

It is a happy number.

It is a super-2 number, since 2×28873144287430² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28873144287431) 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, 32023695 + ... + 32912965.

It is an arithmetic number, because the mean of its divisors is an integer number (1654786905894).

Almost surely, 2^{28873144287430} is an apocalyptic number.

28873144287430 is a deficient number, since it is larger than the sum of its proper divisors (24080036701178).

28873144287430 is a wasteful number, since it uses less digits than its factorization.

28873144287430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950592.

The product of its (nonzero) digits is 57802752, while the sum is 61.

The spelling of 28873144287430 in words is "twenty-eight trillion, eight hundred seventy-three billion, one hundred forty-four million, two hundred eighty-seven thousand, four hundred thirty".