49431648 has 96 divisors (see below), whose sum is σ = 157054464. Its totient is φ = 13289472.

The previous prime is 49431619. The next prime is 49431659. The reversal of 49431648 is 84613494.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9261 + ... + 13587.

It is an arithmetic number, because the mean of its divisors is an integer number (1635984).

Almost surely, 2^49431648 is an apocalyptic number.

49431648 is a gapful number since it is divisible by the number (48) 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 49431648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78527232).

49431648 is an abundant number, since it is smaller than the sum of its proper divisors (107622816).

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

49431648 is a wasteful number, since it uses less digits than its factorization.

49431648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4364 (or 4356 counting only the distinct ones).

The product of its digits is 82944, while the sum is 39.

The square root of 49431648 is about 7030.7643965646. The cubic root of 49431648 is about 367.0019427368.

The spelling of 49431648 in words is "forty-nine million, four hundred thirty-one thousand, six hundred forty-eight".