20374651 has 4 divisors (see below), whose sum is σ = 22226904. Its totient is φ = 18522400.

The previous prime is 20374649. The next prime is 20374667. The reversal of 20374651 is 15647302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20374651 - 2¹ = 20374649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20374351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 926110 + ... + 926131.

It is an arithmetic number, because the mean of its divisors is an integer number (5556726).

Almost surely, 2^20374651 is an apocalyptic number.

20374651 is a deficient number, since it is larger than the sum of its proper divisors (1852253).

20374651 is a wasteful number, since it uses less digits than its factorization.

20374651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1852252.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20374651 is about 4513.8288625069. The cubic root of 20374651 is about 273.1262191017.

It can be divided in two parts, 20374 and 651, that added together give a square (21025 = 145²).

The spelling of 20374651 in words is "twenty million, three hundred seventy-four thousand, six hundred fifty-one".