28040134 has 8 divisors (see below), whose sum is σ = 42244560. Its totient is φ = 13958616.

The previous prime is 28040113. The next prime is 28040189. The reversal of 28040134 is 43104082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28040134² = 1572498229475912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30154 + ... + 31069.

It is an arithmetic number, because the mean of its divisors is an integer number (5280570).

Almost surely, 2^28040134 is an apocalyptic number.

28040134 is a deficient number, since it is larger than the sum of its proper divisors (14204426).

28040134 is a wasteful number, since it uses less digits than its factorization.

28040134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61454.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28040134 is about 5295.2935707097. The cubic root of 28040134 is about 303.8039118068.

The spelling of 28040134 in words is "twenty-eight million, forty thousand, one hundred thirty-four".