20153404 has 6 divisors (see below), whose sum is σ = 35268464. Its totient is φ = 10076700.

The previous prime is 20153401. The next prime is 20153423. The reversal of 20153404 is 40435102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20153401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2519172 + ... + 2519179.

Almost surely, 2^20153404 is an apocalyptic number.

It is an amenable number.

20153404 is a deficient number, since it is larger than the sum of its proper divisors (15115060).

20153404 is a wasteful number, since it uses less digits than its factorization.

20153404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5038355 (or 5038353 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20153404 is about 4489.2542810583. The cubic root of 20153404 is about 272.1339989985.

Adding to 20153404 its reverse (40435102), we get a palindrome (60588506).

The spelling of 20153404 in words is "twenty million, one hundred fifty-three thousand, four hundred four".