49681836 has 72 divisors (see below), whose sum is σ = 132088320. Its totient is φ = 16325712.

The previous prime is 49681823. The next prime is 49681859. The reversal of 49681836 is 63818694.

49681836 is a `hidden beast` number, since 496 + 81 + 83 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 49681791 and 49681800.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76465 + ... + 77111.

It is an arithmetic number, because the mean of its divisors is an integer number (1834560).

Almost surely, 2^49681836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49681836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66044160).

49681836 is an abundant number, since it is smaller than the sum of its proper divisors (82406484).

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

49681836 is a wasteful number, since it uses less digits than its factorization.

49681836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 731 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 49681836 is about 7048.5343157283. The cubic root of 49681836 is about 367.6200690552.

The spelling of 49681836 in words is "forty-nine million, six hundred eighty-one thousand, eight hundred thirty-six".