78383492 has 24 divisors (see below), whose sum is σ = 151048800. Its totient is φ = 35293760.

The previous prime is 78383489. The next prime is 78383509. The reversal of 78383492 is 29438387.

It is a super-2 number, since 2×78383492² = 12287943636228128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3617 + ... + 13032.

It is an arithmetic number, because the mean of its divisors is an integer number (6293700).

Almost surely, 2^78383492 is an apocalyptic number.

It is an amenable number.

78383492 is a deficient number, since it is larger than the sum of its proper divisors (72665308).

78383492 is a wasteful number, since it uses less digits than its factorization.

78383492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16771 (or 16769 counting only the distinct ones).

The product of its digits is 290304, while the sum is 44.

The square root of 78383492 is about 8853.4452051165. The cubic root of 78383492 is about 427.9649504008.

The spelling of 78383492 in words is "seventy-eight million, three hundred eighty-three thousand, four hundred ninety-two".