80192640 has 128 divisors (see below), whose sum is σ = 278925120. Its totient is φ = 19435520.

The previous prime is 80192639. The next prime is 80192641. The reversal of 80192640 is 4629108.

It is an interprime number because it is at equal distance from previous prime (80192639) and next prime (80192641).

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80192598 and 80192607.

It is not an unprimeable number, because it can be changed into a prime (80192641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19222 + ... + 23018.

Almost surely, 2^80192640 is an apocalyptic number.

80192640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80192640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139462560).

80192640 is an abundant number, since it is smaller than the sum of its proper divisors (198732480).

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

80192640 is a wasteful number, since it uses less digits than its factorization.

80192640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830 (or 3818 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 80192640 is about 8955.0343382926. The cubic root of 80192640 is about 431.2325193502.

The spelling of 80192640 in words is "eighty million, one hundred ninety-two thousand, six hundred forty".