28603740 has 96 divisors (see below), whose sum is σ = 92010240. Its totient is φ = 6566400.

The previous prime is 28603727. The next prime is 28603747. The reversal of 28603740 is 4730682.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 28603698 and 28603707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28603747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11400 + ... + 13680.

It is an arithmetic number, because the mean of its divisors is an integer number (958440).

Almost surely, 2^28603740 is an apocalyptic number.

28603740 is a gapful number since it is divisible by the number (20) 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 28603740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46005120).

28603740 is an abundant number, since it is smaller than the sum of its proper divisors (63406500).

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

28603740 is a wasteful number, since it uses less digits than its factorization.

28603740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323 (or 2321 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 28603740 is about 5348.2464415919. The cubic root of 28603740 is about 305.8259080643.

The spelling of 28603740 in words is "twenty-eight million, six hundred three thousand, seven hundred forty".