80400234 has 16 divisors (see below), whose sum is σ = 161189280. Its totient is φ = 26735280.

The previous prime is 80400233. The next prime is 80400263. The reversal of 80400234 is 43200408.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 80400234.

It is not an unprimeable number, because it can be changed into a prime (80400233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13477 + ... + 18504.

It is an arithmetic number, because the mean of its divisors is an integer number (10074330).

Almost surely, 2^80400234 is an apocalyptic number.

80400234 is an abundant number, since it is smaller than the sum of its proper divisors (80789046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80400234 is a wasteful number, since it uses less digits than its factorization.

80400234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32405.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 80400234 is about 8966.6177569918. The cubic root of 80400234 is about 431.6043080284.

The spelling of 80400234 in words is "eighty million, four hundred thousand, two hundred thirty-four".