80870742 has 24 divisors (see below), whose sum is σ = 177837816. Its totient is φ = 26554176.

The previous prime is 80870731. The next prime is 80870747. The reversal of 80870742 is 24707808.

It is a junction number, because it is equal to n+sod(n) for n = 80870697 and 80870706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80870747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32323 + ... + 34734.

It is an arithmetic number, because the mean of its divisors is an integer number (7409909).

Almost surely, 2^80870742 is an apocalyptic number.

80870742 is an abundant number, since it is smaller than the sum of its proper divisors (96967074).

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

80870742 is a wasteful number, since it uses less digits than its factorization.

80870742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67132 (or 67129 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 80870742 is about 8992.8161328919. The cubic root of 80870742 is about 432.4445975789. Note that the first 3 decimals are identical.

The spelling of 80870742 in words is "eighty million, eight hundred seventy thousand, seven hundred forty-two".