27401045 has 24 divisors (see below), whose sum is σ = 38677464. Its totient is φ = 18579456.

The previous prime is 27401041. The next prime is 27401089. The reversal of 27401045 is 54010472.

It can be written as a sum of positive squares in 4 ways, for example, as 5207524 + 22193521 = 2282^2 + 4711^2 .

It is not a de Polignac number, because 27401045 - 2² = 27401041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27401045.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27401041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23189 + ... + 24341.

It is an arithmetic number, because the mean of its divisors is an integer number (1611561).

Almost surely, 2^27401045 is an apocalyptic number.

It is an amenable number.

27401045 is a deficient number, since it is larger than the sum of its proper divisors (11276419).

27401045 is a wasteful number, since it uses less digits than its factorization.

27401045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 27401045 is about 5234.6007488633. The cubic root of 27401045 is about 301.4780577104.

It can be divided in two parts, 2 and 7401045, that added together give a palindrome (7401047).

The spelling of 27401045 in words is "twenty-seven million, four hundred one thousand, forty-five".