27953961 has 24 divisors (see below), whose sum is σ = 43557120. Its totient is φ = 15900192.

The previous prime is 27953957. The next prime is 27953969. The reversal of 27953961 is 16935972.

It is not a de Polignac number, because 27953961 - 2² = 27953957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27953969) 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, 58120 + ... + 58598.

It is an arithmetic number, because the mean of its divisors is an integer number (1814880).

Almost surely, 2^27953961 is an apocalyptic number.

27953961 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

27953961 is a deficient number, since it is larger than the sum of its proper divisors (15603159).

27953961 is a wasteful number, since it uses less digits than its factorization.

27953961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893 (or 886 counting only the distinct ones).

The product of its digits is 102060, while the sum is 42.

The square root of 27953961 is about 5287.1505558287. The cubic root of 27953961 is about 303.4923755059.

The spelling of 27953961 in words is "twenty-seven million, nine hundred fifty-three thousand, nine hundred sixty-one".