49643280 has 200 divisors, whose sum is σ = 177167232. Its totient is φ = 12877056.

The previous prime is 49643263. The next prime is 49643299. The reversal of 49643280 is 8234694.

It is a happy number.

49643280 is a `hidden beast` number, since 4 + 9 + 643 + 2 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 304479 + ... + 304641.

Almost surely, 2^49643280 is an apocalyptic number.

49643280 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 49643280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88583616).

49643280 is an abundant number, since it is smaller than the sum of its proper divisors (127523952).

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

49643280 is a wasteful number, since it uses less digits than its factorization.

49643280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 49643280 is about 7045.7987481903. The cubic root of 49643280 is about 367.5249462449.

The spelling of 49643280 in words is "forty-nine million, six hundred forty-three thousand, two hundred eighty".