49981830 has 16 divisors (see below), whose sum is σ = 119956464. Its totient is φ = 13328480.

The previous prime is 49981823. The next prime is 49981861. The reversal of 49981830 is 3818994.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833001 + ... + 833060.

It is an arithmetic number, because the mean of its divisors is an integer number (7497279).

Almost surely, 2^49981830 is an apocalyptic number.

49981830 is an abundant number, since it is smaller than the sum of its proper divisors (69974634).

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

49981830 is a wasteful number, since it uses less digits than its factorization.

49981830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666071.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 49981830 is about 7069.7828820976. The cubic root of 49981830 is about 368.3585185557.

The spelling of 49981830 in words is "forty-nine million, nine hundred eighty-one thousand, eight hundred thirty".