49897800 has 144 divisors (see below), whose sum is σ = 176514000. Its totient is φ = 12597120.

The previous prime is 49897747. The next prime is 49897807. The reversal of 49897800 is 879894.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (49897807) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 33471 + ... + 34929.

Almost surely, 2^49897800 is an apocalyptic number.

49897800 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 49897800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88257000).

49897800 is an abundant number, since it is smaller than the sum of its proper divisors (126616200).

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

49897800 is a wasteful number, since it uses less digits than its factorization.

49897800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 49897800 is about 7063.8374839743. The cubic root of 49897800 is about 368.1519733052.

The spelling of 49897800 in words is "forty-nine million, eight hundred ninety-seven thousand, eight hundred".