28465340 has 24 divisors (see below), whose sum is σ = 59884272. Its totient is φ = 11365760.

The previous prime is 28465337. The next prime is 28465343. The reversal of 28465340 is 4356482.

It is an interprime number because it is at equal distance from previous prime (28465337) and next prime (28465343).

It is a junction number, because it is equal to n+sod(n) for n = 28465297 and 28465306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28465343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15680 + ... + 17400.

It is an arithmetic number, because the mean of its divisors is an integer number (2495178).

Almost surely, 2^28465340 is an apocalyptic number.

28465340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28465340 is an abundant number, since it is smaller than the sum of its proper divisors (31418932).

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

28465340 is a wasteful number, since it uses less digits than its factorization.

28465340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557 (or 2555 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 28465340 is about 5335.2919320315. The cubic root of 28465340 is about 305.3318613016.

The spelling of 28465340 in words is "twenty-eight million, four hundred sixty-five thousand, three hundred forty".