28611552 has 48 divisors (see below), whose sum is σ = 75382272. Its totient is φ = 9502080.

The previous prime is 28611551. The next prime is 28611559. The reversal of 28611552 is 25511682.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28611551) 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, 46833 + ... + 47439.

It is an arithmetic number, because the mean of its divisors is an integer number (1570464).

Almost surely, 2^28611552 is an apocalyptic number.

It is an amenable number.

28611552 is an abundant number, since it is smaller than the sum of its proper divisors (46770720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28611552 is a wasteful number, since it uses less digits than its factorization.

With its successor (28611553) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (1103).

28611552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111 (or 1103 counting only the distinct ones).

The product of its digits is 4800, while the sum is 30.

The square root of 28611552 is about 5348.9767245708. The cubic root of 28611552 is about 305.8537470174.

The spelling of 28611552 in words is "twenty-eight million, six hundred eleven thousand, five hundred fifty-two".