28429437 has 8 divisors (see below), whose sum is σ = 37935936. Its totient is φ = 18937952.

The previous prime is 28429433. The next prime is 28429451. The reversal of 28429437 is 73492482.

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

It is a cyclic number.

It is not a de Polignac number, because 28429437 - 2² = 28429433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28429395 and 28429404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28429433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1873 + ... + 7769.

It is an arithmetic number, because the mean of its divisors is an integer number (4741992).

Almost surely, 2^28429437 is an apocalyptic number.

It is an amenable number.

28429437 is a deficient number, since it is larger than the sum of its proper divisors (9506499).

28429437 is a wasteful number, since it uses less digits than its factorization.

28429437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7507.

The product of its digits is 96768, while the sum is 39.

The square root of 28429437 is about 5331.9261997893. The cubic root of 28429437 is about 305.2034367926.

The spelling of 28429437 in words is "twenty-eight million, four hundred twenty-nine thousand, four hundred thirty-seven".