28953407 has 8 divisors (see below), whose sum is σ = 33217536. Its totient is φ = 24721272.

The previous prime is 28953383. The next prime is 28953409. The reversal of 28953407 is 70435982.

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 28953407 - 2¹⁶ = 28887871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28953409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6023 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (4152192).

Almost surely, 2^28953407 is an apocalyptic number.

28953407 is a deficient number, since it is larger than the sum of its proper divisors (4264129).

28953407 is a wasteful number, since it uses less digits than its factorization.

28953407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15997.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 28953407 is about 5380.8370166731. The cubic root of 28953407 is about 307.0670559137.

The spelling of 28953407 in words is "twenty-eight million, nine hundred fifty-three thousand, four hundred seven".