49992720 has 80 divisors (see below), whose sum is σ = 157341120. Its totient is φ = 13128192.

The previous prime is 49992697. The next prime is 49992721. The reversal of 49992720 is 2729994.

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

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (49992721) 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, 14526 + ... + 17634.

It is an arithmetic number, because the mean of its divisors is an integer number (1966764).

Almost surely, 2^49992720 is an apocalyptic number.

49992720 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 49992720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78670560).

49992720 is an abundant number, since it is smaller than the sum of its proper divisors (107348400).

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

49992720 is a wasteful number, since it uses less digits than its factorization.

49992720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 49992720 is about 7070.5530193896. The cubic root of 49992720 is about 368.3852691633.

The spelling of 49992720 in words is "forty-nine million, nine hundred ninety-two thousand, seven hundred twenty".