28436628 has 48 divisors (see below), whose sum is σ = 72705024. Its totient is φ = 8579040.

The previous prime is 28436627. The next prime is 28436633. The reversal of 28436628 is 82663482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28436623) 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, 48151 + ... + 48737.

It is an arithmetic number, because the mean of its divisors is an integer number (1514688).

Almost surely, 2^28436628 is an apocalyptic number.

It is an amenable number.

28436628 is an abundant number, since it is smaller than the sum of its proper divisors (44268396).

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

28436628 is a wasteful number, since it uses less digits than its factorization.

28436628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 970 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The square root of 28436628 is about 5332.6004913175. The cubic root of 28436628 is about 305.2291675507.

The spelling of 28436628 in words is "twenty-eight million, four hundred thirty-six thousand, six hundred twenty-eight".