78298029 has 8 divisors (see below), whose sum is σ = 115997120. Its totient is φ = 52198668.

The previous prime is 78298027. The next prime is 78298037. The reversal of 78298029 is 92089287.

It is not a de Polignac number, because 78298029 - 2¹ = 78298027 is a prime.

It is a super-2 number, since 2×78298029² = 12261162690569682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78298021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1449937 + ... + 1449990.

It is an arithmetic number, because the mean of its divisors is an integer number (14499640).

Almost surely, 2^78298029 is an apocalyptic number.

It is an amenable number.

78298029 is a deficient number, since it is larger than the sum of its proper divisors (37699091).

78298029 is a wasteful number, since it uses less digits than its factorization.

78298029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2899936 (or 2899930 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 78298029 is about 8848.6173496202. The cubic root of 78298029 is about 427.8093544178.

The spelling of 78298029 in words is "seventy-eight million, two hundred ninety-eight thousand, twenty-nine".