21375160 has 32 divisors (see below), whose sum is σ = 48308400. Its totient is φ = 8512000.

The previous prime is 21375157. The next prime is 21375163. The reversal of 21375160 is 6157312.

It is an interprime number because it is at equal distance from previous prime (21375157) and next prime (21375163).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21375163) 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, 8976 + ... + 11104.

Almost surely, 2^21375160 is an apocalyptic number.

21375160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21375160 is an abundant number, since it is smaller than the sum of its proper divisors (26933240).

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

21375160 is a wasteful number, since it uses less digits than its factorization.

21375160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2391 (or 2387 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 21375160 is about 4623.3278058126. The cubic root of 21375160 is about 277.5256476038.

The spelling of 21375160 in words is "twenty-one million, three hundred seventy-five thousand, one hundred sixty".