2178148 has 18 divisors (see below), whose sum is σ = 4434486. Its totient is φ = 933408.

The previous prime is 2178139. The next prime is 2178149. The reversal of 2178148 is 8418712.

It can be written as a sum of positive squares in only one way, i.e., 1162084 + 1016064 = 1078^2 + 1008^2 .

It is a super-3 number, since 3×2178148³ = 31001550272459933376, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2178149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5361 + ... + 5752.

2^2178148 is an apocalyptic number.

2178148 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2178148 is an abundant number, since it is smaller than the sum of its proper divisors (2256338).

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

2178148 is a wasteful number, since it uses less digits than its factorization.

2178148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11131 (or 11122 counting only the distinct ones).

The product of its digits is 3584, while the sum is 31.

The square root of 2178148 is about 1475.8550064285. The cubic root of 2178148 is about 129.6270970369.

The spelling of 2178148 in words is "two million, one hundred seventy-eight thousand, one hundred forty-eight".