20472741 has 12 divisors (see below), whose sum is σ = 30526080. Its totient is φ = 13208040.

The previous prime is 20472733. The next prime is 20472757. The reversal of 20472741 is 14727402.

It is a happy number.

It is not a de Polignac number, because 20472741 - 2³ = 20472733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36411 + ... + 36968.

It is an arithmetic number, because the mean of its divisors is an integer number (2543840).

Almost surely, 2^20472741 is an apocalyptic number.

It is an amenable number.

20472741 is a deficient number, since it is larger than the sum of its proper divisors (10053339).

20472741 is a wasteful number, since it uses less digits than its factorization.

20472741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73416 (or 73413 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 20472741 is about 4524.6813147447. The cubic root of 20472741 is about 273.5638228687.

The spelling of 20472741 in words is "twenty million, four hundred seventy-two thousand, seven hundred forty-one".