49078440 has 128 divisors (see below), whose sum is σ = 169344000. Its totient is φ = 12628224.

The previous prime is 49078433. The next prime is 49078441. The reversal of 49078440 is 4487094.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 49078395 and 49078404.

It is not an unprimeable number, because it can be changed into a prime (49078441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30537 + ... + 32103.

It is an arithmetic number, because the mean of its divisors is an integer number (1323000).

Almost surely, 2^49078440 is an apocalyptic number.

49078440 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 49078440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84672000).

49078440 is an abundant number, since it is smaller than the sum of its proper divisors (120265560).

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

49078440 is a wasteful number, since it uses less digits than its factorization.

49078440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 49078440 is about 7005.6006166495. The cubic root of 49078440 is about 366.1257294459.

The spelling of 49078440 in words is "forty-nine million, seventy-eight thousand, four hundred forty".