48921820 has 12 divisors (see below), whose sum is σ = 102735864. Its totient is φ = 19568720.

The previous prime is 48921799. The next prime is 48921823. The reversal of 48921820 is 2812984.

It is a super-2 number, since 2×48921820² = 4786688944224800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48921823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223026 + ... + 1223065.

It is an arithmetic number, because the mean of its divisors is an integer number (8561322).

Almost surely, 2^48921820 is an apocalyptic number.

It is an amenable number.

48921820 is an abundant number, since it is smaller than the sum of its proper divisors (53814044).

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

48921820 is a wasteful number, since it uses less digits than its factorization.

48921820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446100 (or 2446098 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 48921820 is about 6994.4134850608. The cubic root of 48921820 is about 365.7358520869.

The spelling of 48921820 in words is "forty-eight million, nine hundred twenty-one thousand, eight hundred twenty".