28434492 has 18 divisors (see below), whose sum is σ = 71876168. Its totient is φ = 9478152.

The previous prime is 28434491. The next prime is 28434493. The reversal of 28434492 is 29443482.

It is an interprime number because it is at equal distance from previous prime (28434491) and next prime (28434493).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 789847 = 28434492 / (2 + 8 + 4 + 3 + 4 + 4 + 9 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28434491) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 394888 + ... + 394959.

Almost surely, 2^28434492 is an apocalyptic number.

It is an amenable number.

28434492 is an abundant number, since it is smaller than the sum of its proper divisors (43441676).

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

28434492 is a wasteful number, since it uses less digits than its factorization.

28434492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 789857 (or 789852 counting only the distinct ones).

The product of its digits is 55296, while the sum is 36.

The square root of 28434492 is about 5332.4002100368. The cubic root of 28434492 is about 305.2215249916.

The spelling of 28434492 in words is "twenty-eight million, four hundred thirty-four thousand, four hundred ninety-two".