49009240 has 64 divisors (see below), whose sum is σ = 127344960. Its totient is φ = 16627200.

The previous prime is 49009237. The next prime is 49009267. The reversal of 49009240 is 4290094.

49009240 = 2643² + 2644² + ... + 2649².

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 49009199 and 49009208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27414 + ... + 29146.

It is an arithmetic number, because the mean of its divisors is an integer number (1989765).

Almost surely, 2^49009240 is an apocalyptic number.

49009240 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 49009240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63672480).

49009240 is an abundant number, since it is smaller than the sum of its proper divisors (78335720).

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

49009240 is a wasteful number, since it uses less digits than its factorization.

49009240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1852 (or 1848 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 49009240 is about 7000.6599688886. The cubic root of 49009240 is about 365.9535709068.

The spelling of 49009240 in words is "forty-nine million, nine thousand, two hundred forty".