49864240 has 20 divisors (see below), whose sum is σ = 115934544. Its totient is φ = 19945664.

The previous prime is 49864231. The next prime is 49864259. The reversal of 49864240 is 4246894.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 49864240.

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, 311572 + ... + 311731.

Almost surely, 2^49864240 is an apocalyptic number.

49864240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49864240 is an abundant number, since it is smaller than the sum of its proper divisors (66070304).

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

49864240 is a wasteful number, since it uses less digits than its factorization.

49864240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623316 (or 623310 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 49864240 is about 7061.4616050787. The cubic root of 49864240 is about 368.0694182213.

The spelling of 49864240 in words is "forty-nine million, eight hundred sixty-four thousand, two hundred forty".