78149230 has 8 divisors (see below), whose sum is σ = 140668632. Its totient is φ = 31259688.

The previous prime is 78149219. The next prime is 78149251. The reversal of 78149230 is 3294187.

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

It is a super-2 number, since 2×78149230² = 12214604299185800, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3907452 + ... + 3907471.

It is an arithmetic number, because the mean of its divisors is an integer number (17583579).

Almost surely, 2^78149230 is an apocalyptic number.

78149230 is a deficient number, since it is larger than the sum of its proper divisors (62519402).

78149230 is a wasteful number, since it uses less digits than its factorization.

78149230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7814930.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 78149230 is about 8840.2053143578. The cubic root of 78149230 is about 427.5381769994.

The spelling of 78149230 in words is "seventy-eight million, one hundred forty-nine thousand, two hundred thirty".