165427812 has 72 divisors (see below), whose sum is σ = 471458400. Its totient is φ = 50125680.

The previous prime is 165427793. The next prime is 165427831. The reversal of 165427812 is 218724561.

165427812 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165427793) and next prime (165427831).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6739 + ... + 19397.

Almost surely, 2^165427812 is an apocalyptic number.

165427812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165427812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235729200).

165427812 is an abundant number, since it is smaller than the sum of its proper divisors (306030588).

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

165427812 is a wasteful number, since it uses less digits than its factorization.

165427812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12694 (or 12675 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 165427812 is about 12861.8743579620. The cubic root of 165427812 is about 548.9542796886.

The spelling of 165427812 in words is "one hundred sixty-five million, four hundred twenty-seven thousand, eight hundred twelve".