49999720 has 32 divisors (see below), whose sum is σ = 119118600. Its totient is φ = 18823168.

The previous prime is 49999711. The next prime is 49999739. The reversal of 49999720 is 2799994.

It can be written as a sum of positive squares in 4 ways, for example, as 47803396 + 2196324 = 6914^2 + 1482^2 .

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 7 ways as a sum of consecutive naturals, for example, 36085 + ... + 37444.

Almost surely, 2^49999720 is an apocalyptic number.

49999720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49999720 is an abundant number, since it is smaller than the sum of its proper divisors (69118880).

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

49999720 is a wasteful number, since it uses less digits than its factorization.

49999720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73557 (or 73553 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 49999720 is about 7071.0480128479. The cubic root of 49999720 is about 368.4024621769.

The spelling of 49999720 in words is "forty-nine million, nine hundred ninety-nine thousand, seven hundred twenty".