23212144 has 10 divisors (see below), whose sum is σ = 44973560. Its totient is φ = 11606064.

The previous prime is 23212139. The next prime is 23212153. The reversal of 23212144 is 44121232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725364 + ... + 725395.

It is an arithmetic number, because the mean of its divisors is an integer number (4497356).

Almost surely, 2^23212144 is an apocalyptic number.

It is an amenable number.

23212144 is a deficient number, since it is larger than the sum of its proper divisors (21761416).

23212144 is a wasteful number, since it uses less digits than its factorization.

23212144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450767 (or 1450761 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 23212144 is about 4817.8982969756. The cubic root of 23212144 is about 285.2583847365.

Adding to 23212144 its reverse (44121232), we get a palindrome (67333376).

It can be divided in two parts, 2321 and 2144, that added together give a triangular number (4465 = T₉₄).

The spelling of 23212144 in words is "twenty-three million, two hundred twelve thousand, one hundred forty-four".