49447040 has 32 divisors (see below), whose sum is σ = 118210860. Its totient is φ = 19778560.

The previous prime is 49447037. The next prime is 49447081. The reversal of 49447040 is 4074494.

It can be written as a sum of positive squares in 2 ways, for example, as 49224256 + 222784 = 7016^2 + 472^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 49446988 and 49447006.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37991 + ... + 39270.

Almost surely, 2^49447040 is an apocalyptic number.

49447040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49447040 is an abundant number, since it is smaller than the sum of its proper divisors (68763820).

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

49447040 is an equidigital number, since it uses as much as digits as its factorization.

49447040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77280 (or 77268 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 49447040 is about 7031.8589291879. The cubic root of 49447040 is about 367.0400310731.

The spelling of 49447040 in words is "forty-nine million, four hundred forty-seven thousand, forty".