49820436 has 18 divisors (see below), whose sum is σ = 125935082. Its totient is φ = 16606800.

The previous prime is 49820429. The next prime is 49820447. The reversal of 49820436 is 63402894.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 49617936 + 202500 = 7044^2 + 450^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1383901 = 49820436 / (4 + 9 + 8 + 2 + 0 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 49820436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 691915 + ... + 691986.

Almost surely, 2^49820436 is an apocalyptic number.

It is an amenable number.

49820436 is an abundant number, since it is smaller than the sum of its proper divisors (76114646).

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

49820436 is a wasteful number, since it uses less digits than its factorization.

49820436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1383911 (or 1383906 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 49820436 is about 7058.3592994406. The cubic root of 49820436 is about 367.9616079199.

The spelling of 49820436 in words is "forty-nine million, eight hundred twenty thousand, four hundred thirty-six".