49189140 has 432 divisors, whose sum is σ = 210288960. Its totient is φ = 9434880.

The previous prime is 49189139. The next prime is 49189159. The reversal of 49189140 is 4198194.

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 = 49189095 and 49189104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3783774 + ... + 3783786.

It is an arithmetic number, because the mean of its divisors is an integer number (486780).

Almost surely, 2^49189140 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 49189140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105144480).

49189140 is an abundant number, since it is smaller than the sum of its proper divisors (161099820).

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

49189140 is a wasteful number, since it uses less digits than its factorization.

49189140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 49189140 is about 7013.4969879512. The cubic root of 49189140 is about 366.4007971640.

The spelling of 49189140 in words is "forty-nine million, one hundred eighty-nine thousand, one hundred forty".