49169540 has 72 divisors (see below), whose sum is σ = 121347072. Its totient is φ = 16685760.

The previous prime is 49169539. The next prime is 49169551. The reversal of 49169540 is 4596194.

It is a junction number, because it is equal to n+sod(n) for n = 49169494 and 49169503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128189 + ... + 128571.

It is an arithmetic number, because the mean of its divisors is an integer number (1685376).

Almost surely, 2^49169540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49169540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60673536).

49169540 is an abundant number, since it is smaller than the sum of its proper divisors (72177532).

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

49169540 is a wasteful number, since it uses less digits than its factorization.

49169540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 49169540 is about 7012.0995429329. The cubic root of 49169540 is about 366.3521251083.

The spelling of 49169540 in words is "forty-nine million, one hundred sixty-nine thousand, five hundred forty".