1623612120 has 64 divisors (see below), whose sum is σ = 5245521120. Its totient is φ = 399657984.

The previous prime is 1623612101. The next prime is 1623612121. The reversal of 1623612120 is 212163261.

It is a super-2 number, since 2×1623612120² = 5272232632421788800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623612121) 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, 518829 + ... + 521948.

Almost surely, 2^1623612120 is an apocalyptic number.

1623612120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1623612120 is an abundant number, since it is smaller than the sum of its proper divisors (3621909000).

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

1623612120 is a wasteful number, since it uses less digits than its factorization.

1623612120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040804 (or 1040800 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1623612120 is about 40294.0705315311. The cubic root of 1623612120 is about 1175.3325438719.

Adding to 1623612120 its reverse (212163261), we get a palindrome (1835775381).

The spelling of 1623612120 in words is "one billion, six hundred twenty-three million, six hundred twelve thousand, one hundred twenty".