28341900 has 90 divisors (see below), whose sum is σ = 91899500. Its totient is φ = 7555680.

The previous prime is 28341899. The next prime is 28341931. The reversal of 28341900 is 914382.

It is a tau number, because it is divible by the number of its divisors (90).

It is a super-2 number, since 2×28341900² = 1606526591220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 6351 + ... + 9849.

Almost surely, 2^28341900 is an apocalyptic number.

28341900 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 28341900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45949750).

28341900 is an abundant number, since it is smaller than the sum of its proper divisors (63557600).

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

28341900 is a wasteful number, since it uses less digits than its factorization.

28341900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28341900 is about 5323.7111116213. The cubic root of 28341900 is about 304.8898643824.

It can be divided in two parts, 28341 and 900, that added together give a square (29241 = 171²).

The spelling of 28341900 in words is "twenty-eight million, three hundred forty-one thousand, nine hundred".