49489920 has 192 divisors, whose sum is σ = 176904000. Its totient is φ = 13123584.

The previous prime is 49489879. The next prime is 49489931. The reversal of 49489920 is 2998494.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 276391 + ... + 276569.

It is an arithmetic number, because the mean of its divisors is an integer number (921375).

Almost surely, 2^49489920 is an apocalyptic number.

49489920 is a gapful number since it is divisible by the number (40) 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 49489920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88452000).

49489920 is an abundant number, since it is smaller than the sum of its proper divisors (127414080).

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

49489920 is a wasteful number, since it uses less digits than its factorization.

49489920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 49489920 is about 7034.9072488555. The cubic root of 49489920 is about 367.1460982866.

The spelling of 49489920 in words is "forty-nine million, four hundred eighty-nine thousand, nine hundred twenty".