22151460 has 24 divisors (see below), whose sum is σ = 62024256. Its totient is φ = 5907040.

The previous prime is 22151449. The next prime is 22151471. The reversal of 22151460 is 6415122.

It is an interprime number because it is at equal distance from previous prime (22151449) and next prime (22151471).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184536 + ... + 184655.

It is an arithmetic number, because the mean of its divisors is an integer number (2584344).

Almost surely, 2^22151460 is an apocalyptic number.

22151460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22151460 is an abundant number, since it is smaller than the sum of its proper divisors (39872796).

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

22151460 is a wasteful number, since it uses less digits than its factorization.

22151460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369203 (or 369201 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 22151460 is about 4706.5337563859. The cubic root of 22151460 is about 280.8454886087.

Adding to 22151460 its reverse (6415122), we get a palindrome (28566582).

It can be divided in two parts, 221 and 51460, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 22151460 in words is "twenty-two million, one hundred fifty-one thousand, four hundred sixty".