28541400 has 48 divisors (see below), whose sum is σ = 88480200. Its totient is φ = 7610880.

The previous prime is 28541369. The next prime is 28541407. The reversal of 28541400 is 414582.

It is a super-2 number, since 2×28541400² = 1629223027920000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28541407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23185 + ... + 24384.

Almost surely, 2^28541400 is an apocalyptic number.

28541400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28541400 is an abundant number, since it is smaller than the sum of its proper divisors (59938800).

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

28541400 is a wasteful number, since it uses less digits than its factorization.

28541400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47588 (or 47579 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 28541400 is about 5342.4151841653. The cubic root of 28541400 is about 305.6035705384.

Adding to 28541400 its reverse (414582), we get a palindrome (28955982).

The spelling of 28541400 in words is "twenty-eight million, five hundred forty-one thousand, four hundred".