28010055 has 8 divisors (see below), whose sum is σ = 44816112. Its totient is φ = 14938688.

The previous prime is 28010053. The next prime is 28010069. The reversal of 28010055 is 55001082.

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

It is a cyclic number.

It is not a de Polignac number, because 28010055 - 2¹ = 28010053 is a prime.

It is a super-2 number, since 2×28010055² = 1569126362206050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28010053) 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, 933654 + ... + 933683.

It is an arithmetic number, because the mean of its divisors is an integer number (5602014).

Almost surely, 2^28010055 is an apocalyptic number.

28010055 is a deficient number, since it is larger than the sum of its proper divisors (16806057).

28010055 is a wasteful number, since it uses less digits than its factorization.

28010055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1867345.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 28010055 is about 5292.4526450409. The cubic root of 28010055 is about 303.6952415304.

The spelling of 28010055 in words is "twenty-eight million, ten thousand, fifty-five".