28434760 has 32 divisors (see below), whose sum is σ = 64135800. Its totient is φ = 11345920.

The previous prime is 28434691. The next prime is 28434767. The reversal of 28434760 is 6743482.

It can be written as a sum of positive squares in 4 ways, for example, as 20448484 + 7986276 = 4522^2 + 2826^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28434767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25086 + ... + 26194.

Almost surely, 2^28434760 is an apocalyptic number.

28434760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28434760 is an abundant number, since it is smaller than the sum of its proper divisors (35701040).

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

28434760 is a wasteful number, since it uses less digits than its factorization.

28434760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 28434760 is about 5332.4253393742. The cubic root of 28434760 is about 305.2224839105. Note that the first 3 decimals are identical.

The spelling of 28434760 in words is "twenty-eight million, four hundred thirty-four thousand, seven hundred sixty".