27948531 has 8 divisors (see below), whose sum is σ = 40131280. Its totient is φ = 17199072.

The previous prime is 27948521. The next prime is 27948533. The reversal of 27948531 is 13584972.

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

It is not a de Polignac number, because 27948531 - 2⁵ = 27948499 is a prime.

It is a super-2 number, since 2×27948531² = 1562240770115922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 716629 = 27948531 / (2 + 7 + 9 + 4 + 8 + 5 + 3 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27948531.

It is not an unprimeable number, because it can be changed into a prime (27948533) 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, 358276 + ... + 358353.

It is an arithmetic number, because the mean of its divisors is an integer number (5016410).

Almost surely, 2^27948531 is an apocalyptic number.

27948531 is a deficient number, since it is larger than the sum of its proper divisors (12182749).

27948531 is a wasteful number, since it uses less digits than its factorization.

27948531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716645.

The product of its digits is 60480, while the sum is 39.

The square root of 27948531 is about 5286.6370217748. The cubic root of 27948531 is about 303.4727233080.

It can be divided in two parts, 2794 and 8531, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 27948531 in words is "twenty-seven million, nine hundred forty-eight thousand, five hundred thirty-one".