4921920 has 84 divisors (see below), whose sum is σ = 16939260. Its totient is φ = 1311744.

The previous prime is 4921919. The next prime is 4921921. The reversal of 4921920 is 291294.

It is an interprime number because it is at equal distance from previous prime (4921919) and next prime (4921921).

It can be written as a sum of positive squares in 2 ways, for example, as 1327104 + 3594816 = 1152^2 + 1896^2 .

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (4921921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2026 + ... + 3734.

Almost surely, 2^4921920 is an apocalyptic number.

4921920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4921920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8469630).

4921920 is an abundant number, since it is smaller than the sum of its proper divisors (12017340).

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

4921920 is a wasteful number, since it uses less digits than its factorization.

4921920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1732 (or 1719 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 4921920 is about 2218.5400604902. The cubic root of 4921920 is about 170.1028213043.

The spelling of 4921920 in words is "four million, nine hundred twenty-one thousand, nine hundred twenty".