49278744 has 24 divisors (see below), whose sum is σ = 133463460. Its totient is φ = 16426224.

The previous prime is 49278727. The next prime is 49278751. The reversal of 49278744 is 44787294.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×49278744² = 4856789220435072, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 49278744.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 342142 + ... + 342285.

Almost surely, 2^49278744 is an apocalyptic number.

It is an amenable number.

49278744 is an abundant number, since it is smaller than the sum of its proper divisors (84184716).

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

49278744 is a wasteful number, since it uses less digits than its factorization.

49278744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684439 (or 684432 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 49278744 is about 7019.8820502912. The cubic root of 49278744 is about 366.6231434107.

The spelling of 49278744 in words is "forty-nine million, two hundred seventy-eight thousand, seven hundred forty-four".