49753640 has 16 divisors (see below), whose sum is σ = 111945780. Its totient is φ = 19901440.

The previous prime is 49753637. The next prime is 49753643. The reversal of 49753640 is 4635794.

It is an interprime number because it is at equal distance from previous prime (49753637) and next prime (49753643).

It can be written as a sum of positive squares in 2 ways, for example, as 43533604 + 6220036 = 6598^2 + 2494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 49753594 and 49753603.

It is not an unprimeable number, because it can be changed into a prime (49753643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 621881 + ... + 621960.

Almost surely, 2^49753640 is an apocalyptic number.

49753640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49753640 is an abundant number, since it is smaller than the sum of its proper divisors (62192140).

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

49753640 is a wasteful number, since it uses less digits than its factorization.

49753640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243852 (or 1243848 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 49753640 is about 7053.6260178719. The cubic root of 49753640 is about 367.7970880422.

The spelling of 49753640 in words is "forty-nine million, seven hundred fifty-three thousand, six hundred forty".