22400460 has 36 divisors (see below), whose sum is σ = 67948608. Its totient is φ = 5973408.

The previous prime is 22400453. The next prime is 22400467. The reversal of 22400460 is 6400422.

It is an interprime number because it is at equal distance from previous prime (22400453) and next prime (22400467).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22400467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62044 + ... + 62403.

Almost surely, 2^22400460 is an apocalyptic number.

22400460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22400460 is an abundant number, since it is smaller than the sum of its proper divisors (45548148).

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

22400460 is a wasteful number, since it uses less digits than its factorization.

22400460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124462 (or 124457 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22400460 is about 4732.9124225999. The cubic root of 22400460 is about 281.8938788869.

Adding to 22400460 its reverse (6400422), we get a palindrome (28800882).

The spelling of 22400460 in words is "twenty-two million, four hundred thousand, four hundred sixty".