49902440 has 32 divisors (see below), whose sum is σ = 128321280. Its totient is φ = 17109312.

The previous prime is 49902427. The next prime is 49902443. The reversal of 49902440 is 4420994.

It is a junction number, because it is equal to n+sod(n) for n = 49902397 and 49902406.

It is not an unprimeable number, because it can be changed into a prime (49902443) 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, 88832 + ... + 89391.

It is an arithmetic number, because the mean of its divisors is an integer number (4010040).

Almost surely, 2^49902440 is an apocalyptic number.

49902440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49902440 is an abundant number, since it is smaller than the sum of its proper divisors (78418840).

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

49902440 is a wasteful number, since it uses less digits than its factorization.

49902440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178241 (or 178237 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 49902440 is about 7064.1659097164. The cubic root of 49902440 is about 368.1633844443.

The spelling of 49902440 in words is "forty-nine million, nine hundred two thousand, four hundred forty".