20049480 has 192 divisors, whose sum is σ = 73120320. Its totient is φ = 4723200.

The previous prime is 20049473. The next prime is 20049493. The reversal of 20049480 is 8494002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241519 + ... + 241601.

It is an arithmetic number, because the mean of its divisors is an integer number (380835).

Almost surely, 2^20049480 is an apocalyptic number.

20049480 is a gapful number since it is divisible by the number (20) 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 20049480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36560160).

20049480 is an abundant number, since it is smaller than the sum of its proper divisors (53070840).

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

20049480 is a wasteful number, since it uses less digits than its factorization.

20049480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 165 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20049480 is about 4477.6645698400. The cubic root of 20049480 is about 271.6654262848.

The spelling of 20049480 in words is "twenty million, forty-nine thousand, four hundred eighty".