49138500 has 192 divisors, whose sum is σ = 158505984. Its totient is φ = 11776000.

The previous prime is 49138447. The next prime is 49138501. The reversal of 49138500 is 583194.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (49138501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1045477 + ... + 1045523.

It is an arithmetic number, because the mean of its divisors is an integer number (825552).

Almost surely, 2^49138500 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 49138500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79252992).

49138500 is an abundant number, since it is smaller than the sum of its proper divisors (109367484).

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

49138500 is a wasteful number, since it uses less digits than its factorization.

49138500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 49138500 is about 7009.8858763891. The cubic root of 49138500 is about 366.2750179962.

The spelling of 49138500 in words is "forty-nine million, one hundred thirty-eight thousand, five hundred".