20401460 has 24 divisors (see below), whose sum is σ = 44706816. Its totient is φ = 7805600.

The previous prime is 20401457. The next prime is 20401463. The reversal of 20401460 is 6410402.

It is an interprime number because it is at equal distance from previous prime (20401457) and next prime (20401463).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20401463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21716 + ... + 22635.

It is an arithmetic number, because the mean of its divisors is an integer number (1862784).

Almost surely, 2^20401460 is an apocalyptic number.

20401460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20401460 is an abundant number, since it is smaller than the sum of its proper divisors (24305356).

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

20401460 is a wasteful number, since it uses less digits than its factorization.

20401460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44383 (or 44381 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20401460 is about 4516.7975380794. The cubic root of 20401460 is about 273.2459599112.

Adding to 20401460 its reverse (6410402), we get a palindrome (26811862).

The spelling of 20401460 in words is "twenty million, four hundred one thousand, four hundred sixty".