49280840 has 64 divisors (see below), whose sum is σ = 128511360. Its totient is φ = 16657920.

The previous prime is 49280839. The next prime is 49280849. The reversal of 49280840 is 4808294.

It is a super-2 number, since 2×49280840² = 4857202382211200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 49280840.

It is not an unprimeable number, because it can be changed into a prime (49280849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19235 + ... + 21645.

It is an arithmetic number, because the mean of its divisors is an integer number (2007990).

Almost surely, 2^49280840 is an apocalyptic number.

49280840 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 49280840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64255680).

49280840 is an abundant number, since it is smaller than the sum of its proper divisors (79230520).

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

49280840 is a wasteful number, since it uses less digits than its factorization.

49280840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2502 (or 2498 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 49280840 is about 7020.0313389614. The cubic root of 49280840 is about 366.6283412651.

The spelling of 49280840 in words is "forty-nine million, two hundred eighty thousand, eight hundred forty".