49507640 has 192 divisors, whose sum is σ = 146512800. Its totient is φ = 14902272.

The previous prime is 49507639. The next prime is 49507643. The reversal of 49507640 is 4670594.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 49507640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49507643) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 738887 + ... + 738953.

Almost surely, 2^49507640 is an apocalyptic number.

49507640 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 49507640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73256400).

49507640 is an abundant number, since it is smaller than the sum of its proper divisors (97005160).

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

49507640 is a wasteful number, since it uses less digits than its factorization.

49507640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 49507640 is about 7036.1665699442. The cubic root of 49507640 is about 367.1899122763.

The spelling of 49507640 in words is "forty-nine million, five hundred seven thousand, six hundred forty".