7934478 has 32 divisors (see below), whose sum is σ = 16982784. Its totient is φ = 2462592.

The previous prime is 7934477. The next prime is 7934483. The reversal of 7934478 is 8744397.

It is a super-2 number, since 2×7934478² = 125911882264968, which contains 22 as substring.

It is a d-powerful number, because it can be written as 7³ + 9² + 3⁸ + 4 + 4⁸ + 7⁸ + 8⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7934477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10551 + ... + 11277.

It is an arithmetic number, because the mean of its divisors is an integer number (530712).

Almost surely, 2^7934478 is an apocalyptic number.

7934478 is an abundant number, since it is smaller than the sum of its proper divisors (9048306).

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

7934478 is a wasteful number, since it uses less digits than its factorization.

7934478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its digits is 169344, while the sum is 42.

The square root of 7934478 is about 2816.8205480648. The cubic root of 7934478 is about 199.4524858423.

The spelling of 7934478 in words is "seven million, nine hundred thirty-four thousand, four hundred seventy-eight".