20049960 has 64 divisors (see below), whose sum is σ = 68745600. Its totient is φ = 4582656.

The previous prime is 20049937. The next prime is 20049971. The reversal of 20049960 is 6994002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11095 + ... + 12774.

It is an arithmetic number, because the mean of its divisors is an integer number (1074150).

Almost surely, 2^20049960 is an apocalyptic number.

20049960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20049960 is an abundant number, since it is smaller than the sum of its proper divisors (48695640).

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

20049960 is a wasteful number, since it uses less digits than its factorization.

20049960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23890 (or 23886 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 20049960 is about 4477.7181688891. The cubic root of 20049960 is about 271.6675942274.

The spelling of 20049960 in words is "twenty million, forty-nine thousand, nine hundred sixty".