21140348 has 24 divisors (see below), whose sum is σ = 38309040. Its totient is φ = 10200960.

The previous prime is 21140341. The next prime is 21140351. The reversal of 21140348 is 84304112.

It is a super-2 number, since 2×21140348² = 893828627122208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21140341) 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, 14618 + ... + 15998.

It is an arithmetic number, because the mean of its divisors is an integer number (1596210).

Almost surely, 2^21140348 is an apocalyptic number.

It is an amenable number.

21140348 is a deficient number, since it is larger than the sum of its proper divisors (17168692).

21140348 is a wasteful number, since it uses less digits than its factorization.

21140348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 21140348 is about 4597.8634168492. The cubic root of 21140348 is about 276.5056717246.

The spelling of 21140348 in words is "twenty-one million, one hundred forty thousand, three hundred forty-eight".