49303640 has 32 divisors (see below), whose sum is σ = 114514560. Its totient is φ = 19084800.

The previous prime is 49303633. The next prime is 49303649. The reversal of 49303640 is 4630394.

49303640 = T₂₀₈ + T₂₀₉ + ... + T₆₇₂.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49303649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18641 + ... + 21120.

It is an arithmetic number, because the mean of its divisors is an integer number (3578580).

Almost surely, 2^49303640 is an apocalyptic number.

49303640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49303640 is an abundant number, since it is smaller than the sum of its proper divisors (65210920).

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

49303640 is a wasteful number, since it uses less digits than its factorization.

49303640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39803 (or 39799 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 29.

The square root of 49303640 is about 7021.6550755502. The cubic root of 49303640 is about 366.6848732925.

The spelling of 49303640 in words is "forty-nine million, three hundred three thousand, six hundred forty".