28036836400 has 120 divisors (see below), whose sum is σ = 67941085520. Its totient is φ = 11118228480.

The previous prime is 28036836371. The next prime is 28036836413. The reversal of 28036836400 is 463863082.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28120702 + ... + 28121698.

Almost surely, 2^28036836400 is an apocalyptic number.

28036836400 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 28036836400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33970542760).

28036836400 is an abundant number, since it is smaller than the sum of its proper divisors (39904249120).

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

28036836400 is a wasteful number, since it uses less digits than its factorization.

28036836400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551 (or 1540 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 28036836400 in words is "twenty-eight billion, thirty-six million, eight hundred thirty-six thousand, four hundred".