52023440 has 40 divisors (see below), whose sum is σ = 138235200. Its totient is φ = 17836416.

The previous prime is 52023431. The next prime is 52023467. The reversal of 52023440 is 4432025.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 45890 + ... + 47009.

It is an arithmetic number, because the mean of its divisors is an integer number (3455880).

Almost surely, 2^52023440 is an apocalyptic number.

It is an amenable number.

52023440 is an abundant number, since it is smaller than the sum of its proper divisors (86211760).

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

52023440 is a wasteful number, since it uses less digits than its factorization.

52023440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92919 (or 92913 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 52023440 is about 7212.7276393886. The cubic root of 52023440 is about 373.3071906297.

Adding to 52023440 its reverse (4432025), we get a palindrome (56455465).

The spelling of 52023440 in words is "fifty-two million, twenty-three thousand, four hundred forty".