20347004 has 6 divisors (see below), whose sum is σ = 35607264. Its totient is φ = 10173500.

The previous prime is 20346983. The next prime is 20347007. The reversal of 20347004 is 40074302.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20347007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2543372 + ... + 2543379.

It is an arithmetic number, because the mean of its divisors is an integer number (5934544).

Almost surely, 2^20347004 is an apocalyptic number.

It is an amenable number.

20347004 is a deficient number, since it is larger than the sum of its proper divisors (15260260).

20347004 is a wasteful number, since it uses less digits than its factorization.

20347004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086755 (or 5086753 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 20.

The square root of 20347004 is about 4510.7653452602. The cubic root of 20347004 is about 273.0026253510.

The spelling of 20347004 in words is "twenty million, three hundred forty-seven thousand, four".