7140478 has 24 divisors (see below), whose sum is σ = 11543616. Its totient is φ = 3307200.

The previous prime is 7140473. The next prime is 7140479. The reversal of 7140478 is 8740417.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7140473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134700 + ... + 134752.

It is an arithmetic number, because the mean of its divisors is an integer number (480984).

Almost surely, 2^7140478 is an apocalyptic number.

7140478 is a deficient number, since it is larger than the sum of its proper divisors (4403138).

7140478 is a wasteful number, since it uses less digits than its factorization.

7140478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 7140478 is about 2672.1672851826. The cubic root of 7140478 is about 192.5642940351.

The spelling of 7140478 in words is "seven million, one hundred forty thousand, four hundred seventy-eight".