23729450 has 24 divisors (see below), whose sum is σ = 46734732. Its totient is φ = 8933120.

The previous prime is 23729443. The next prime is 23729479. The reversal of 23729450 is 5492732.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 18258529 + 5470921 = 4273^2 + 2339^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13109 + ... + 14808.

Almost surely, 2^23729450 is an apocalyptic number.

23729450 is a deficient number, since it is larger than the sum of its proper divisors (23005282).

23729450 is a wasteful number, since it uses less digits than its factorization.

23729450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27946 (or 27941 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 23729450 is about 4871.2883306164. The cubic root of 23729450 is about 287.3619248768.

The spelling of 23729450 in words is "twenty-three million, seven hundred twenty-nine thousand, four hundred fifty".