28652551 has 16 divisors (see below), whose sum is σ = 31500000. Its totient is φ = 25958016.

The previous prime is 28652537. The next prime is 28652557. The reversal of 28652551 is 15525682.

It is not a de Polignac number, because 28652551 - 2¹³ = 28644359 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 (28652557) 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, 81925 + ... + 82273.

It is an arithmetic number, because the mean of its divisors is an integer number (1968750).

Almost surely, 2^28652551 is an apocalyptic number.

28652551 is a deficient number, since it is larger than the sum of its proper divisors (2847449).

28652551 is a wasteful number, since it uses less digits than its factorization.

28652551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 24000, while the sum is 34.

The square root of 28652551 is about 5352.8077678915. The cubic root of 28652551 is about 305.9997686073. Note that the first 3 decimals are identical.

The spelling of 28652551 in words is "twenty-eight million, six hundred fifty-two thousand, five hundred fifty-one".