49987760 has 20 divisors (see below), whose sum is σ = 116221728. Its totient is φ = 19995072.

The previous prime is 49987759. The next prime is 49987771. The reversal of 49987760 is 6778994.

It is a happy number.

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

It is a super-2 number, since 2×49987760² = 4997552299635200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49987699 and 49987708.

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, 312344 + ... + 312503.

Almost surely, 2^49987760 is an apocalyptic number.

49987760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49987760 is an abundant number, since it is smaller than the sum of its proper divisors (66233968).

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

49987760 is a wasteful number, since it uses less digits than its factorization.

49987760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624860 (or 624854 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 49987760 is about 7070.2022601903. The cubic root of 49987760 is about 368.3730857136.

The spelling of 49987760 in words is "forty-nine million, nine hundred eighty-seven thousand, seven hundred sixty".