80428623 has 32 divisors (see below), whose sum is σ = 120441600. Its totient is φ = 47328000.

The previous prime is 80428603. The next prime is 80428637. The reversal of 80428623 is 32682408.

It is not a de Polignac number, because 80428623 - 2⁵ = 80428591 is a prime.

It is a super-2 number, since 2×80428623² = 12937526795352258, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80428603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196443 + ... + 196851.

It is an arithmetic number, because the mean of its divisors is an integer number (3763800).

Almost surely, 2^80428623 is an apocalyptic number.

80428623 is a deficient number, since it is larger than the sum of its proper divisors (40012977).

80428623 is a wasteful number, since it uses less digits than its factorization.

80428623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 583.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 80428623 is about 8968.2006556499. The cubic root of 80428623 is about 431.6551013003.

The spelling of 80428623 in words is "eighty million, four hundred twenty-eight thousand, six hundred twenty-three".