78408098 has 16 divisors (see below), whose sum is σ = 124528320. Its totient is φ = 36922896.

The previous prime is 78408091. The next prime is 78408103. The reversal of 78408098 is 89080487.

It is a happy number.

It is a super-2 number, since 2×78408098² = 12295659663955208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78408091) 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, 611 + ... + 12537.

It is an arithmetic number, because the mean of its divisors is an integer number (7783020).

Almost surely, 2^78408098 is an apocalyptic number.

78408098 is a deficient number, since it is larger than the sum of its proper divisors (46120222).

78408098 is a wasteful number, since it uses less digits than its factorization.

78408098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12121.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 78408098 is about 8854.8347246010. The cubic root of 78408098 is about 428.0097277027.

The spelling of 78408098 in words is "seventy-eight million, four hundred eight thousand, ninety-eight".