1232239990 has 16 divisors (see below), whose sum is σ = 2227807152. Its totient is φ = 490723744.

The previous prime is 1232239969. The next prime is 1232239991. The reversal of 1232239990 is 999322321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232239991) 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, 269149 + ... + 273688.

It is an arithmetic number, because the mean of its divisors is an integer number (139237947).

Almost surely, 2^1232239990 is an apocalyptic number.

1232239990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1232239990 is a deficient number, since it is larger than the sum of its proper divisors (995567162).

1232239990 is a wasteful number, since it uses less digits than its factorization.

1232239990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543071.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 1232239990 is about 35103.2760579408. The cubic root of 1232239990 is about 1072.0912865707.

The spelling of 1232239990 in words is "one billion, two hundred thirty-two million, two hundred thirty-nine thousand, nine hundred ninety".