978027494 has 24 divisors (see below), whose sum is σ = 1568468928. Its totient is φ = 456896160.

The previous prime is 978027487. The next prime is 978027499. The reversal of 978027494 is 494720879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978027499) 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, 42764 + ... + 61520.

It is an arithmetic number, because the mean of its divisors is an integer number (65352872).

Almost surely, 2^978027494 is an apocalyptic number.

978027494 is a deficient number, since it is larger than the sum of its proper divisors (590441434).

978027494 is a wasteful number, since it uses less digits than its factorization.

978027494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18848 (or 18819 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 978027494 is about 31273.4311197221. The cubic root of 978027494 is about 992.6215233146.

The spelling of 978027494 in words is "nine hundred seventy-eight million, twenty-seven thousand, four hundred ninety-four".