49453638 has 32 divisors (see below), whose sum is σ = 108116736. Its totient is φ = 14987808.

The previous prime is 49453633. The next prime is 49453639. The reversal of 49453638 is 83635494.

49453638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×49453638² = 4891324622870088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49453638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49453633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495 + ... + 9957.

It is an arithmetic number, because the mean of its divisors is an integer number (3378648).

Almost surely, 2^49453638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49453638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54058368).

49453638 is an abundant number, since it is smaller than the sum of its proper divisors (58663098).

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

49453638 is a wasteful number, since it uses less digits than its factorization.

49453638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9548.

The product of its digits is 311040, while the sum is 42.

The square root of 49453638 is about 7032.3280640198. The cubic root of 49453638 is about 367.0563557605.

The spelling of 49453638 in words is "forty-nine million, four hundred fifty-three thousand, six hundred thirty-eight".