21460754 has 16 divisors (see below), whose sum is σ = 38059200. Its totient is φ = 8880144.

The previous prime is 21460727. The next prime is 21460787. The reversal of 21460754 is 45706412.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is an unprimeable number.

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, 26024 + ... + 26835.

It is an arithmetic number, because the mean of its divisors is an integer number (2378700).

Almost surely, 2^21460754 is an apocalyptic number.

21460754 is a deficient number, since it is larger than the sum of its proper divisors (16598446).

21460754 is a wasteful number, since it uses less digits than its factorization.

21460754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52897.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 21460754 is about 4632.5753096955. The cubic root of 21460754 is about 277.8955924890.

The spelling of 21460754 in words is "twenty-one million, four hundred sixty thousand, seven hundred fifty-four".