49215840 has 48 divisors (see below), whose sum is σ = 155031408. Its totient is φ = 13124096.

The previous prime is 49215839. The next prime is 49215857. The reversal of 49215840 is 4851294.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50787 + ... + 51746.

It is an arithmetic number, because the mean of its divisors is an integer number (3229821).

Almost surely, 2^49215840 is an apocalyptic number.

49215840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49215840 is an abundant number, since it is smaller than the sum of its proper divisors (105815568).

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

49215840 is a wasteful number, since it uses less digits than its factorization.

49215840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102551 (or 102543 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 49215840 is about 7015.4002024118. The cubic root of 49215840 is about 366.4670796249.

The spelling of 49215840 in words is "forty-nine million, two hundred fifteen thousand, eight hundred forty".