78238435 has 16 divisors (see below), whose sum is σ = 102896640. Its totient is φ = 56636640.

The previous prime is 78238411. The next prime is 78238483. The reversal of 78238435 is 53483287.

It is not a de Polignac number, because 78238435 - 2¹⁵ = 78205667 is a prime.

It is a super-2 number, since 2×78238435² = 12242505422498450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9076 + ... + 15454.

It is an arithmetic number, because the mean of its divisors is an integer number (6431040).

Almost surely, 2^78238435 is an apocalyptic number.

78238435 is a deficient number, since it is larger than the sum of its proper divisors (24658205).

78238435 is a wasteful number, since it uses less digits than its factorization.

78238435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6618.

The product of its digits is 161280, while the sum is 40.

The square root of 78238435 is about 8845.2492898731. The cubic root of 78238435 is about 427.7007891409.

The spelling of 78238435 in words is "seventy-eight million, two hundred thirty-eight thousand, four hundred thirty-five".