4320372 has 48 divisors (see below), whose sum is σ = 12131840. Its totient is φ = 1168992.

The previous prime is 4320347. The next prime is 4320373. The reversal of 4320372 is 2730234.

It is a happy number.

It is a super-2 number, since 2×4320372² = 37331228436768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243 + ... + 2949.

Almost surely, 2^4320372 is an apocalyptic number.

4320372 is a gapful number since it is divisible by the number (42) 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 4320372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6065920).

4320372 is an abundant number, since it is smaller than the sum of its proper divisors (7811468).

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

4320372 is a wasteful number, since it uses less digits than its factorization.

4320372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740 (or 2738 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 4320372 is about 2078.5504564480. The cubic root of 4320372 is about 162.8697316919.

The spelling of 4320372 in words is "four million, three hundred twenty thousand, three hundred seventy-two".