32400923 has 4 divisors (see below), whose sum is σ = 32413080. Its totient is φ = 32388768.

The previous prime is 32400919. The next prime is 32400941. The reversal of 32400923 is 32900423.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 32400923 - 2² = 32400919 is a prime.

It is a super-2 number, since 2×32400923² = 2099639622503858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32400023) 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, 158 + ... + 8051.

It is an arithmetic number, because the mean of its divisors is an integer number (8103270).

Almost surely, 2^32400923 is an apocalyptic number.

32400923 is a deficient number, since it is larger than the sum of its proper divisors (12157).

32400923 is an equidigital number, since it uses as much as digits as its factorization.

32400923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12156.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 32400923 is about 5692.1808650112. The cubic root of 32400923 is about 318.8005979910.

Subtracting 32400923 from its reverse (32900423), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 32400923 in words is "thirty-two million, four hundred thousand, nine hundred twenty-three".