4897840 has 20 divisors (see below), whose sum is σ = 11387664. Its totient is φ = 1959104.

The previous prime is 4897831. The next prime is 4897847. The reversal of 4897840 is 487984.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 4897793 and 4897802.

It is not an unprimeable number, because it can be changed into a prime (4897847) 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, 30532 + ... + 30691.

Almost surely, 2^4897840 is an apocalyptic number.

4897840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4897840 is an abundant number, since it is smaller than the sum of its proper divisors (6489824).

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

4897840 is a wasteful number, since it uses less digits than its factorization.

4897840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61236 (or 61230 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 4897840 is about 2213.1064140705. The cubic root of 4897840 is about 169.8249640160.

The spelling of 4897840 in words is "four million, eight hundred ninety-seven thousand, eight hundred forty".