20964151 has 16 divisors (see below), whose sum is σ = 23184000. Its totient is φ = 18839808.

The previous prime is 20964143. The next prime is 20964157. The reversal of 20964151 is 15146902.

It is not a de Polignac number, because 20964151 - 2³ = 20964143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20964157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140625 + ... + 140773.

It is an arithmetic number, because the mean of its divisors is an integer number (1449000).

Almost surely, 2^20964151 is an apocalyptic number.

20964151 is a deficient number, since it is larger than the sum of its proper divisors (2219849).

20964151 is a wasteful number, since it uses less digits than its factorization.

20964151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 20964151 is about 4578.6625776530. The cubic root of 20964151 is about 275.7353366760.

It can be divided in two parts, 20964 and 151, that added together give a triangular number (21115 = T₂₀₅).

The spelling of 20964151 in words is "twenty million, nine hundred sixty-four thousand, one hundred fifty-one".