28900157 has 8 divisors (see below), whose sum is σ = 33952800. Its totient is φ = 24251760.

The previous prime is 28900139. The next prime is 28900177. The reversal of 28900157 is 75100982.

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

It is not a de Polignac number, because 28900157 - 2⁸ = 28899901 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 (28900117) 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, 100907 + ... + 101192.

It is an arithmetic number, because the mean of its divisors is an integer number (4244100).

Almost surely, 2^28900157 is an apocalyptic number.

It is an amenable number.

28900157 is a deficient number, since it is larger than the sum of its proper divisors (5052643).

28900157 is a wasteful number, since it uses less digits than its factorization.

28900157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202123.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 28900157 is about 5375.8866245485. The cubic root of 28900157 is about 306.8786917231.

The spelling of 28900157 in words is "twenty-eight million, nine hundred thousand, one hundred fifty-seven".