27021402 has 24 divisors (see below), whose sum is σ = 58798740. Its totient is φ = 8968320.

The previous prime is 27021391. The next prime is 27021431. The reversal of 27021402 is 20412072.

It can be written as a sum of positive squares in 2 ways, for example, as 26532801 + 488601 = 5151^2 + 699^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1224 + ... + 7452.

Almost surely, 2^27021402 is an apocalyptic number.

27021402 is an abundant number, since it is smaller than the sum of its proper divisors (31777338).

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

27021402 is a wasteful number, since it uses less digits than its factorization.

27021402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6478 (or 6475 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 27021402 is about 5198.2114231724. The cubic root of 27021402 is about 300.0792457319.

Adding to 27021402 its reverse (20412072), we get a palindrome (47433474).

The spelling of 27021402 in words is "twenty-seven million, twenty-one thousand, four hundred two".