2012178432 has 192 divisors, whose sum is σ = 6164121600. Its totient is φ = 577290240.

The previous prime is 2012178431. The next prime is 2012178461. The reversal of 2012178432 is 2348712102.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 2012178432.

It is not an unprimeable number, because it can be changed into a prime (2012178431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1283313 + ... + 1284879.

It is an arithmetic number, because the mean of its divisors is an integer number (32104800).

Almost surely, 2^2012178432 is an apocalyptic number.

2012178432 is a gapful number since it is divisible by the number (22) 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 2012178432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3082060800).

2012178432 is an abundant number, since it is smaller than the sum of its proper divisors (4151943168).

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

2012178432 is a wasteful number, since it uses less digits than its factorization.

2012178432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622 (or 1602 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 2012178432 is about 44857.3119123293. The cubic root of 2012178432 is about 1262.4731871834.

The spelling of 2012178432 in words is "two billion, twelve million, one hundred seventy-eight thousand, four hundred thirty-two".