20049624 has 72 divisors (see below), whose sum is σ = 63177660. Its totient is φ = 5727456.

The previous prime is 20049607. The next prime is 20049649. The reversal of 20049624 is 42694002.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 687 + ... + 6369.

Almost surely, 2^20049624 is an apocalyptic number.

20049624 is a gapful number since it is divisible by the number (24) 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 20049624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31588830).

20049624 is an abundant number, since it is smaller than the sum of its proper divisors (43128036).

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

20049624 is a wasteful number, since it uses less digits than its factorization.

20049624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5709 (or 5695 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20049624 is about 4477.6806496221. The cubic root of 20049624 is about 271.6660766712. Note that the first 3 decimals are identical.

It can be divided in two parts, 2004 and 9624, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 20049624 in words is "twenty million, forty-nine thousand, six hundred twenty-four".