27903042 has 40 divisors (see below), whose sum is σ = 64063692. Its totient is φ = 9072000.

The previous prime is 27902993. The next prime is 27903053. The reversal of 27903042 is 24030972.

It can be written as a sum of positive squares in 2 ways, for example, as 20169081 + 7733961 = 4491^2 + 2781^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 27902997 and 27903015.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4542 + ... + 8742.

Almost surely, 2^27903042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27903042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32031846).

27903042 is an abundant number, since it is smaller than the sum of its proper divisors (36160650).

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

27903042 is a wasteful number, since it uses less digits than its factorization.

27903042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256 (or 4247 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 27903042 is about 5282.3330072990. Note that the first 3 decimals coincide. The cubic root of 27903042 is about 303.3079899394.

It can be divided in two parts, 2790 and 3042, that added together give a cube (5832 = 18³).

The spelling of 27903042 in words is "twenty-seven million, nine hundred three thousand, forty-two".