49309240 has 32 divisors (see below), whose sum is σ = 115771680. Its totient is φ = 18865792.

The previous prime is 49309219. The next prime is 49309241. The reversal of 49309240 is 4290394.

It is a super-2 number, since 2×49309240² = 4862802298755200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49309241) 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, 25879 + ... + 27718.

It is an arithmetic number, because the mean of its divisors is an integer number (3617865).

Almost surely, 2^49309240 is an apocalyptic number.

49309240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49309240 is an abundant number, since it is smaller than the sum of its proper divisors (66462440).

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

49309240 is a wasteful number, since it uses less digits than its factorization.

49309240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53631 (or 53627 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 49309240 is about 7022.0538306111. The cubic root of 49309240 is about 366.6987556857.

The spelling of 49309240 in words is "forty-nine million, three hundred nine thousand, two hundred forty".