5420640 has 96 divisors (see below), whose sum is σ = 17853696. Its totient is φ = 1379840.

The previous prime is 5420633. The next prime is 5420669. The reversal of 5420640 is 460245.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10795 + ... + 11285.

It is an arithmetic number, because the mean of its divisors is an integer number (185976).

Almost surely, 2^5420640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5420640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8926848).

5420640 is an abundant number, since it is smaller than the sum of its proper divisors (12433056).

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

5420640 is a wasteful number, since it uses less digits than its factorization.

5420640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 5420640 is about 2328.2267930767. The cubic root of 5420640 is about 175.6643050202.

Adding to 5420640 its reverse (460245), we get a palindrome (5880885).

The spelling of 5420640 in words is "five million, four hundred twenty thousand, six hundred forty".