20432146 has 8 divisors (see below), whose sum is σ = 35026560. Its totient is φ = 8756628.

The previous prime is 20432143. The next prime is 20432149. The reversal of 20432146 is 64123402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20432143) and next prime (20432149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20432143) 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, 729706 + ... + 729733.

It is an arithmetic number, because the mean of its divisors is an integer number (4378320).

Almost surely, 2^20432146 is an apocalyptic number.

20432146 is a deficient number, since it is larger than the sum of its proper divisors (14594414).

20432146 is a wasteful number, since it uses less digits than its factorization.

20432146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459448.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20432146 is about 4520.1931374666. The cubic root of 20432146 is about 273.3828884307.

Adding to 20432146 its reverse (64123402), we get a palindrome (84555548).

The spelling of 20432146 in words is "twenty million, four hundred thirty-two thousand, one hundred forty-six".