12072270 has 32 divisors (see below), whose sum is σ = 33113088. Its totient is φ = 2759328.

The previous prime is 12072257. The next prime is 12072271. The reversal of 12072270 is 7227021.

12072270 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12072271) 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, 28534 + ... + 28953.

It is an arithmetic number, because the mean of its divisors is an integer number (1034784).

Almost surely, 2^12072270 is an apocalyptic number.

12072270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12072270 is an abundant number, since it is smaller than the sum of its proper divisors (21040818).

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

12072270 is a wasteful number, since it uses less digits than its factorization.

12072270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57504.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 12072270 is about 3474.5172326526. The cubic root of 12072270 is about 229.4015317012.

Adding to 12072270 its reverse (7227021), we get a palindrome (19299291).

It can be divided in two parts, 120 and 72270, that added together give a triangular number (72390 = T₃₈₀).

The spelling of 12072270 in words is "twelve million, seventy-two thousand, two hundred seventy".