28464460 has 24 divisors (see below), whose sum is σ = 63292320. Its totient is φ = 10715904.

The previous prime is 28464439. The next prime is 28464463. The reversal of 28464460 is 6446482.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (28464463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41520 + ... + 42199.

It is an arithmetic number, because the mean of its divisors is an integer number (2637180).

Almost surely, 2^28464460 is an apocalyptic number.

28464460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28464460 is an abundant number, since it is smaller than the sum of its proper divisors (34827860).

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

28464460 is a wasteful number, since it uses less digits than its factorization.

28464460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83745 (or 83743 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 28464460 is about 5335.2094616800. The cubic root of 28464460 is about 305.3287148457.

The spelling of 28464460 in words is "twenty-eight million, four hundred sixty-four thousand, four hundred sixty".