28950551 has 16 divisors (see below), whose sum is σ = 34171200. Its totient is φ = 24011520.

The previous prime is 28950521. The next prime is 28950553. The reversal of 28950551 is 15505982.

It is a cyclic number.

It is not a de Polignac number, because 28950551 - 2¹⁰ = 28949527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28950553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42425 + ... + 43101.

It is an arithmetic number, because the mean of its divisors is an integer number (2135700).

Almost surely, 2^28950551 is an apocalyptic number.

28950551 is a deficient number, since it is larger than the sum of its proper divisors (5220649).

28950551 is a wasteful number, since it uses less digits than its factorization.

28950551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874.

The product of its (nonzero) digits is 18000, while the sum is 35.

The square root of 28950551 is about 5380.5716239076. The cubic root of 28950551 is about 307.0569590899.

The spelling of 28950551 in words is "twenty-eight million, nine hundred fifty thousand, five hundred fifty-one".