49668840 has 96 divisors (see below), whose sum is σ = 173857320. Its totient is φ = 12225024.

The previous prime is 49668833. The next prime is 49668841. The reversal of 49668840 is 4886694.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45724644 + 3944196 = 6762^2 + 1986^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (49668841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 627 + ... + 9986.

Almost surely, 2^49668840 is an apocalyptic number.

49668840 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 49668840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86928660).

49668840 is an abundant number, since it is smaller than the sum of its proper divisors (124188480).

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

49668840 is a wasteful number, since it uses less digits than its factorization.

49668840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10643 (or 10636 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 49668840 is about 7047.6123616442. The cubic root of 49668840 is about 367.5880116847.

The spelling of 49668840 in words is "forty-nine million, six hundred sixty-eight thousand, eight hundred forty".