7860138 has 32 divisors (see below), whose sum is σ = 18470592. Its totient is φ = 2198400.

The previous prime is 7860133. The next prime is 7860163. The reversal of 7860138 is 8310687.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 7860099 and 7860108.

It is not an unprimeable number, because it can be changed into a prime (7860133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3723 + ... + 5438.

It is an arithmetic number, because the mean of its divisors is an integer number (577206).

Almost surely, 2^7860138 is an apocalyptic number.

7860138 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

7860138 is an abundant number, since it is smaller than the sum of its proper divisors (10610454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7860138 is a wasteful number, since it uses less digits than its factorization.

7860138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9190.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 7860138 is about 2803.5937651521. The cubic root of 7860138 is about 198.8276244393.

The spelling of 7860138 in words is "seven million, eight hundred sixty thousand, one hundred thirty-eight".