49351840 has 48 divisors (see below), whose sum is σ = 117355392. Its totient is φ = 19611904.

The previous prime is 49351817. The next prime is 49351847. The reversal of 49351840 is 4815394.

It is a super-2 number, since 2×49351840² = 4871208222771200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 49351796 and 49351805.

It is not an unprimeable number, because it can be changed into a prime (49351847) 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, 25797 + ... + 27643.

It is an arithmetic number, because the mean of its divisors is an integer number (2444904).

Almost surely, 2^49351840 is an apocalyptic number.

49351840 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 49351840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58677696).

49351840 is an abundant number, since it is smaller than the sum of its proper divisors (68003552).

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

49351840 is a wasteful number, since it uses less digits than its factorization.

49351840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2029 (or 2021 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 49351840 is about 7025.0864763361. The cubic root of 49351840 is about 366.8043266397.

The spelling of 49351840 in words is "forty-nine million, three hundred fifty-one thousand, eight hundred forty".