28418424 has 32 divisors (see below), whose sum is σ = 75226320. Its totient is φ = 8915456.

The previous prime is 28418419. The next prime is 28418437. The reversal of 28418424 is 42481482.

It is a super-3 number, since 3×28418424³ (a number of 23 digits) contains 333 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34419 + ... + 35234.

Almost surely, 2^28418424 is an apocalyptic number.

28418424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28418424 is an abundant number, since it is smaller than the sum of its proper divisors (46807896).

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

28418424 is a wasteful number, since it uses less digits than its factorization.

28418424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69679 (or 69675 counting only the distinct ones).

The product of its digits is 16384, while the sum is 33.

The square root of 28418424 is about 5330.8933585282. The cubic root of 28418424 is about 305.1640217834.

The spelling of 28418424 in words is "twenty-eight million, four hundred eighteen thousand, four hundred twenty-four".