80345402 has 4 divisors (see below), whose sum is σ = 120518106. Its totient is φ = 40172700.

The previous prime is 80345401. The next prime is 80345423. The reversal of 80345402 is 20454308.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 75151561 + 5193841 = 8669^2 + 2279^2 .

It is not an unprimeable number, because it can be changed into a prime (80345401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20086349 + ... + 20086352.

Almost surely, 2^80345402 is an apocalyptic number.

80345402 is a deficient number, since it is larger than the sum of its proper divisors (40172704).

80345402 is a wasteful number, since it uses less digits than its factorization.

80345402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40172703.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 80345402 is about 8963.5596723623. The cubic root of 80345402 is about 431.5061693863.

The spelling of 80345402 in words is "eighty million, three hundred forty-five thousand, four hundred two".