22147400 has 48 divisors (see below), whose sum is σ = 56179440. Its totient is φ = 8052800.

The previous prime is 22147351. The next prime is 22147409. The reversal of 22147400 is 474122.

22147400 is nontrivially palindromic in base 14.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (22147409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2834 + ... + 7233.

It is an arithmetic number, because the mean of its divisors is an integer number (1170405).

Almost surely, 2^22147400 is an apocalyptic number.

22147400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22147400 is an abundant number, since it is smaller than the sum of its proper divisors (34032040).

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

22147400 is a wasteful number, since it uses less digits than its factorization.

22147400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10094 (or 10085 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 22147400 is about 4706.1024213249. The cubic root of 22147400 is about 280.8283294335.

The spelling of 22147400 in words is "twenty-two million, one hundred forty-seven thousand, four hundred".