28706243124 has 48 divisors (see below), whose sum is σ = 72361312128. Its totient is φ = 8804811648.

The previous prime is 28706243117. The next prime is 28706243131. The reversal of 28706243124 is 42134260782.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28706243117) and next prime (28706243131).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240792 + ... + 339695.

It is an arithmetic number, because the mean of its divisors is an integer number (1507527336).

Almost surely, 2^28706243124 is an apocalyptic number.

It is an amenable number.

28706243124 is an abundant number, since it is smaller than the sum of its proper divisors (43655069004).

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

28706243124 is a wasteful number, since it uses less digits than its factorization.

28706243124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 580824 (or 580822 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 28706243124 in words is "twenty-eight billion, seven hundred six million, two hundred forty-three thousand, one hundred twenty-four".