18724950 has 36 divisors (see below), whose sum is σ = 50308908. Its totient is φ = 4993200.

The previous prime is 18724949. The next prime is 18724957. The reversal of 18724950 is 5942781.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18724957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 20356 + ... + 21255.

Almost surely, 2^18724950 is an apocalyptic number.

18724950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18724950 is an abundant number, since it is smaller than the sum of its proper divisors (31583958).

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

18724950 is a wasteful number, since it uses less digits than its factorization.

18724950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41629 (or 41621 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 18724950 is about 4327.2335273244. The cubic root of 18724950 is about 265.5462802487.

The spelling of 18724950 in words is "eighteen million, seven hundred twenty-four thousand, nine hundred fifty".