78350029 has 4 divisors (see below), whose sum is σ = 81756576. Its totient is φ = 74943484.

The previous prime is 78350023. The next prime is 78350033. The reversal of 78350029 is 92005387.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78350029 is a prime.

It is a super-2 number, since 2×78350029² = 12277454088601682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78349976 and 78350003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78350023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703239 + ... + 1703284.

It is an arithmetic number, because the mean of its divisors is an integer number (20439144).

Almost surely, 2^78350029 is an apocalyptic number.

It is an amenable number.

78350029 is a deficient number, since it is larger than the sum of its proper divisors (3406547).

78350029 is a wasteful number, since it uses less digits than its factorization.

78350029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406546.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 78350029 is about 8851.5551740923. Note that the first 3 decimals coincide. The cubic root of 78350029 is about 427.9040403410.

The spelling of 78350029 in words is "seventy-eight million, three hundred fifty thousand, twenty-nine".