78890034 has 32 divisors (see below), whose sum is σ = 164514240. Its totient is φ = 25188800.

The previous prime is 78889963. The next prime is 78890039. The reversal of 78890034 is 43009887.

It is a junction number, because it is equal to n+sod(n) for n = 78889974 and 78890001.

It is not an unprimeable number, because it can be changed into a prime (78890039) 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, 21064 + ... + 24524.

It is an arithmetic number, because the mean of its divisors is an integer number (5141070).

Almost surely, 2^78890034 is an apocalyptic number.

78890034 is an abundant number, since it is smaller than the sum of its proper divisors (85624206).

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

78890034 is a wasteful number, since it uses less digits than its factorization.

78890034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 78890034 is about 8882.0061922969. The cubic root of 78890034 is about 428.8848588795.

The spelling of 78890034 in words is "seventy-eight million, eight hundred ninety thousand, thirty-four".