78549098 has 8 divisors (see below), whose sum is σ = 117998208. Its totient is φ = 39216364.

The previous prime is 78549091. The next prime is 78549101. The reversal of 78549098 is 89094587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78549098² = 12339921593227208, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (78549091) 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, 27386 + ... + 30117.

It is an arithmetic number, because the mean of its divisors is an integer number (14749776).

Almost surely, 2^78549098 is an apocalyptic number.

78549098 is a deficient number, since it is larger than the sum of its proper divisors (39449110).

78549098 is a wasteful number, since it uses less digits than its factorization.

78549098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58188.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 78549098 is about 8862.7929006606. The cubic root of 78549098 is about 428.2661350303.

The spelling of 78549098 in words is "seventy-eight million, five hundred forty-nine thousand, ninety-eight".