28522029 has 8 divisors (see below), whose sum is σ = 38913952. Its totient is φ = 18572400.

The previous prime is 28522009. The next prime is 28522069. The reversal of 28522029 is 92022582.

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

It is not a de Polignac number, because 28522029 - 2⁷ = 28521901 is a prime.

It is a super-2 number, since 2×28522029² = 1627012276553682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28521987 and 28522005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28522009) 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, 110422 + ... + 110679.

It is an arithmetic number, because the mean of its divisors is an integer number (4864244).

Almost surely, 2^28522029 is an apocalyptic number.

It is an amenable number.

28522029 is a deficient number, since it is larger than the sum of its proper divisors (10391923).

28522029 is a wasteful number, since it uses less digits than its factorization.

28522029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221147.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28522029 is about 5340.6019323668. The cubic root of 28522029 is about 305.5344173488.

The spelling of 28522029 in words is "twenty-eight million, five hundred twenty-two thousand, twenty-nine".