27401631 has 8 divisors (see below), whose sum is σ = 36559920. Its totient is φ = 18255552.

The previous prime is 27401617. The next prime is 27401701. The reversal of 27401631 is 13610472.

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

It is not a de Polignac number, because 27401631 - 2¹³ = 27393439 is a prime.

It is a super-2 number, since 2×27401631² = 1501698762920322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27401131) 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, 6165 + ... + 9633.

It is an arithmetic number, because the mean of its divisors is an integer number (4569990).

Almost surely, 2^27401631 is an apocalyptic number.

27401631 is a deficient number, since it is larger than the sum of its proper divisors (9158289).

27401631 is a wasteful number, since it uses less digits than its factorization.

27401631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6105.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 27401631 is about 5234.6567222694. The cubic root of 27401631 is about 301.4802068363.

It can be divided in two parts, 2740 and 1631, that added together give a triangular number (4371 = T₉₃).

The spelling of 27401631 in words is "twenty-seven million, four hundred one thousand, six hundred thirty-one".