49677640 has 16 divisors (see below), whose sum is σ = 111774780. Its totient is φ = 19871040.

The previous prime is 49677613. The next prime is 49677659. The reversal of 49677640 is 4677694.

It can be written as a sum of positive squares in 2 ways, for example, as 49028004 + 649636 = 7002^2 + 806^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 620931 + ... + 621010.

Almost surely, 2^49677640 is an apocalyptic number.

49677640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49677640 is an abundant number, since it is smaller than the sum of its proper divisors (62097140).

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

49677640 is a wasteful number, since it uses less digits than its factorization.

49677640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241952 (or 1241948 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 49677640 is about 7048.2366589098. The cubic root of 49677640 is about 367.6097193488.

The spelling of 49677640 in words is "forty-nine million, six hundred seventy-seven thousand, six hundred forty".