20747153 has 16 divisors (see below), whose sum is σ = 24858624. Its totient is φ = 16940880.

The previous prime is 20747149. The next prime is 20747161. The reversal of 20747153 is 35174702.

It is not a de Polignac number, because 20747153 - 2² = 20747149 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20747053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13826 + ... + 15252.

It is an arithmetic number, because the mean of its divisors is an integer number (1553664).

Almost surely, 2^20747153 is an apocalyptic number.

It is an amenable number.

20747153 is a deficient number, since it is larger than the sum of its proper divisors (4111471).

20747153 is a wasteful number, since it uses less digits than its factorization.

20747153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 20747153 is about 4554.9042800041. The cubic root of 20747153 is about 274.7806647780.

The spelling of 20747153 in words is "twenty million, seven hundred forty-seven thousand, one hundred fifty-three".