28940160 has 64 divisors (see below), whose sum is σ = 92252880. Its totient is φ = 7716864.

The previous prime is 28940117. The next prime is 28940167. The reversal of 28940160 is 6104982.

It is a tau number, because it is divible by the number of its divisors (64).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28940167) 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, 5617 + ... + 9456.

Almost surely, 2^28940160 is an apocalyptic number.

28940160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28940160 is an abundant number, since it is smaller than the sum of its proper divisors (63312720).

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

28940160 is a wasteful number, since it uses less digits than its factorization.

28940160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15095 (or 15083 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 28940160 is about 5379.6059335234. The cubic root of 28940160 is about 307.0202181580.

The spelling of 28940160 in words is "twenty-eight million, nine hundred forty thousand, one hundred sixty".