49193820 has 72 divisors (see below), whose sum is σ = 160707456. Its totient is φ = 12108672.

The previous prime is 49193813. The next prime is 49193839. The reversal of 49193820 is 2839194.

49193820 is a `hidden beast` number, since 491 + 93 + 82 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 8172 + ... + 12851.

It is an arithmetic number, because the mean of its divisors is an integer number (2232048).

Almost surely, 2^49193820 is an apocalyptic number.

It is an amenable number.

49193820 is an abundant number, since it is smaller than the sum of its proper divisors (111513636).

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

49193820 is a wasteful number, since it uses less digits than its factorization.

49193820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21051 (or 21046 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 49193820 is about 7013.8306224202. The cubic root of 49193820 is about 366.4124169467.

The spelling of 49193820 in words is "forty-nine million, one hundred ninety-three thousand, eight hundred twenty".