28434810 has 32 divisors (see below), whose sum is σ = 68706432. Its totient is φ = 7531200.

The previous prime is 28434797. The next prime is 28434817. The reversal of 28434810 is 1843482.

It is a super-2 number, since 2×28434810² = 1617076839472200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (28434817) 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, 1392 + ... + 7668.

It is an arithmetic number, because the mean of its divisors is an integer number (2147076).

Almost surely, 2^28434810 is an apocalyptic number.

28434810 is an abundant number, since it is smaller than the sum of its proper divisors (40271622).

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

28434810 is a wasteful number, since it uses less digits than its factorization.

28434810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6438.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 28434810 is about 5332.4300276703. The cubic root of 28434810 is about 305.2226628126. Note that the first 3 decimals are identical.

The spelling of 28434810 in words is "twenty-eight million, four hundred thirty-four thousand, eight hundred ten".