49449680 has 80 divisors (see below), whose sum is σ = 132312960. Its totient is φ = 16836096.

The previous prime is 49449671. The next prime is 49449683. The reversal of 49449680 is 8694494.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49449683) 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, 126926 + ... + 127314.

It is an arithmetic number, because the mean of its divisors is an integer number (1653912).

Almost surely, 2^49449680 is an apocalyptic number.

49449680 is a gapful number since it is divisible by the number (40) 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 49449680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66156480).

49449680 is an abundant number, since it is smaller than the sum of its proper divisors (82863280).

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

49449680 is a wasteful number, since it uses less digits than its factorization.

49449680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 49449680 is about 7032.0466437588. The cubic root of 49449680 is about 367.0465631017.

The spelling of 49449680 in words is "forty-nine million, four hundred forty-nine thousand, six hundred eighty".