1201623456 has 96 divisors (see below), whose sum is σ = 3456734400. Its totient is φ = 362465280.

The previous prime is 1201623391. The next prime is 1201623469. The reversal of 1201623456 is 6543261021.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 239340 + ... + 244308.

It is an arithmetic number, because the mean of its divisors is an integer number (36007650).

Almost surely, 2^1201623456 is an apocalyptic number.

1201623456 is a gapful number since it is divisible by the number (16) 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 1201623456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1728367200).

1201623456 is an abundant number, since it is smaller than the sum of its proper divisors (2255110944).

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

1201623456 is a wasteful number, since it uses less digits than its factorization.

1201623456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5222 (or 5214 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1201623456 is about 34664.4408003360. The cubic root of 1201623456 is about 1063.1375697458.

Adding to 1201623456 its reverse (6543261021), we get a palindrome (7744884477).

The spelling of 1201623456 in words is "one billion, two hundred one million, six hundred twenty-three thousand, four hundred fifty-six".