28472136 has 192 divisors, whose sum is σ = 94556160. Its totient is φ = 7056000.

The previous prime is 28472131. The next prime is 28472159. The reversal of 28472136 is 63127482.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28472097 and 28472106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28472131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 400981 + ... + 401051.

It is an arithmetic number, because the mean of its divisors is an integer number (492480).

Almost surely, 2^28472136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28472136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47278080).

28472136 is an abundant number, since it is smaller than the sum of its proper divisors (66084024).

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

28472136 is a wasteful number, since it uses less digits than its factorization.

28472136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136 (or 125 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 28472136 is about 5335.9287851320. The cubic root of 28472136 is about 305.3561583381.

The spelling of 28472136 in words is "twenty-eight million, four hundred seventy-two thousand, one hundred thirty-six".