49930128 has 80 divisors (see below), whose sum is σ = 146865600. Its totient is φ = 16231680.

The previous prime is 49930123. The next prime is 49930129. The reversal of 49930128 is 82103994.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 49930092 and 49930101.

It is not an unprimeable number, because it can be changed into a prime (49930123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16303 + ... + 19121.

It is an arithmetic number, because the mean of its divisors is an integer number (1835820).

Almost surely, 2^49930128 is an apocalyptic number.

49930128 is a gapful number since it is divisible by the number (48) 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 49930128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73432800).

49930128 is an abundant number, since it is smaller than the sum of its proper divisors (96935472).

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

49930128 is a wasteful number, since it uses less digits than its factorization.

49930128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877 (or 2865 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 49930128 is about 7066.1253880751. The cubic root of 49930128 is about 368.2314627658.

The spelling of 49930128 in words is "forty-nine million, nine hundred thirty thousand, one hundred twenty-eight".