18071412 has 24 divisors (see below), whose sum is σ = 42542976. Its totient is φ = 5970048.

The previous prime is 18071411. The next prime is 18071461. The reversal of 18071412 is 21417081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18071411) 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, 5308 + ... + 8019.

It is an arithmetic number, because the mean of its divisors is an integer number (1772624).

Almost surely, 2^18071412 is an apocalyptic number.

18071412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18071412 is an abundant number, since it is smaller than the sum of its proper divisors (24471564).

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

18071412 is a wasteful number, since it uses less digits than its factorization.

18071412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13447 (or 13445 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 18071412 is about 4251.0483412918. The cubic root of 18071412 is about 262.4202605873.

Adding to 18071412 its reverse (21417081), we get a palindrome (39488493).

The spelling of 18071412 in words is "eighteen million, seventy-one thousand, four hundred twelve".