23929299450 has 720 divisors, whose sum is σ = 84375084024. Its totient is φ = 4993228800.

The previous prime is 23929299421. The next prime is 23929299461. The reversal of 23929299450 is 5499292932.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 2915028081 + 21014271369 = 53991^2 + 144963^2 .

It is a super-2 number, since 2×23929299450² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 138319564 + ... + 138319736.

Almost surely, 2^23929299450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23929299450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42187542012).

23929299450 is an abundant number, since it is smaller than the sum of its proper divisors (60445784574).

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

23929299450 is a wasteful number, since it uses less digits than its factorization.

23929299450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 3149280, while the sum is 54.

The spelling of 23929299450 in words is "twenty-three billion, nine hundred twenty-nine million, two hundred ninety-nine thousand, four hundred fifty".