49056138 has 64 divisors (see below), whose sum is σ = 115920000. Its totient is φ = 15334272.

The previous prime is 49056121. The next prime is 49056173. The reversal of 49056138 is 83165094.

49056138 is a `hidden beast` number, since 4 + 90 + 561 + 3 + 8 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140388 + ... + 140736.

It is an arithmetic number, because the mean of its divisors is an integer number (1811250).

Almost surely, 2^49056138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49056138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57960000).

49056138 is an abundant number, since it is smaller than the sum of its proper divisors (66863862).

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

49056138 is a wasteful number, since it uses less digits than its factorization.

49056138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 510 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 49056138 is about 7004.0087093036. The cubic root of 49056138 is about 366.0702633176.

It can be divided in two parts, 49056 and 138, that added together give a palindrome (49194).

The spelling of 49056138 in words is "forty-nine million, fifty-six thousand, one hundred thirty-eight".