7453644420 has 48 divisors (see below), whose sum is σ = 20929386240. Its totient is φ = 1982002176.

The previous prime is 7453644403. The next prime is 7453644427. The reversal of 7453644420 is 244463547.

It is not an unprimeable number, because it can be changed into a prime (7453644427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154780 + ... + 197139.

It is an arithmetic number, because the mean of its divisors is an integer number (436028880).

Almost surely, 2^7453644420 is an apocalyptic number.

It is an amenable number.

7453644420 is an abundant number, since it is smaller than the sum of its proper divisors (13475741820).

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

7453644420 is a wasteful number, since it uses less digits than its factorization.

7453644420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352284 (or 352282 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 39.

The square root of 7453644420 is about 86334.4914851533. The cubic root of 7453644420 is about 1953.3926842565.

The spelling of 7453644420 in words is "seven billion, four hundred fifty-three million, six hundred forty-four thousand, four hundred twenty".