28574436 has 48 divisors (see below), whose sum is σ = 75091968. Its totient is φ = 8378400.

The previous prime is 28574431. The next prime is 28574437. The reversal of 28574436 is 63447582.

It is a happy number.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28574394 and 28574403.

It is not an unprimeable number, because it can be changed into a prime (28574431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601 + ... + 7583.

It is an arithmetic number, because the mean of its divisors is an integer number (1564416).

Almost surely, 2^28574436 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 28574436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37545984).

28574436 is an abundant number, since it is smaller than the sum of its proper divisors (46517532).

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

28574436 is a wasteful number, since it uses less digits than its factorization.

28574436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7032 (or 7030 counting only the distinct ones).

The product of its digits is 161280, while the sum is 39.

The square root of 28574436 is about 5345.5061500292. The cubic root of 28574436 is about 305.7214347263.

The spelling of 28574436 in words is "twenty-eight million, five hundred seventy-four thousand, four hundred thirty-six".