28723445001400 has 96 divisors (see below), whose sum is σ = 67726955688480. Its totient is φ = 11326827456000.

The previous prime is 28723445001353. The next prime is 28723445001401. The reversal of 28723445001400 is 410054432782.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28723445001401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 256410202 + ... + 256522198.

It is an arithmetic number, because the mean of its divisors is an integer number (705489121755).

Almost surely, 2^{28723445001400} is an apocalyptic number.

28723445001400 is a gapful number since it is divisible by the number (20) 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 28723445001400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33863477844240).

28723445001400 is an abundant number, since it is smaller than the sum of its proper divisors (39003510687080).

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

28723445001400 is a wasteful number, since it uses less digits than its factorization.

28723445001400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130145 (or 130136 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 28723445001400 in words is "twenty-eight trillion, seven hundred twenty-three billion, four hundred forty-five million, one thousand, four hundred".