49980000 has 360 divisors, whose sum is σ = 201929112. Its totient is φ = 10752000.

The previous prime is 49979999. The next prime is 49980001. The reversal of 49980000 is 8994.

It is an interprime number because it is at equal distance from previous prime (49979999) and next prime (49980001).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a zygodrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 49980000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49980001) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2939992 + ... + 2940008.

Almost surely, 2^49980000 is an apocalyptic number.

49980000 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 49980000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100964556).

49980000 is an abundant number, since it is smaller than the sum of its proper divisors (151949112).

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

49980000 is a wasteful number, since it uses less digits than its factorization.

49980000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 49980000 is about 7069.6534568535. The cubic root of 49980000 is about 368.3540228932.

Adding to 49980000 its reverse (8994), we get a palindrome (49988994).

The spelling of 49980000 in words is "forty-nine million, nine hundred eighty thousand".