2928978 has 24 divisors (see below), whose sum is σ = 6834828. Its totient is φ = 901152.

The previous prime is 2928967. The next prime is 2928997. The reversal of 2928978 is 8798292.

It can be written as a sum of positive squares in 2 ways, for example, as 2913849 + 15129 = 1707^2 + 123^2 .

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6025 + ... + 6492.

2^2928978 is an apocalyptic number.

2928978 is an abundant number, since it is smaller than the sum of its proper divisors (3905850).

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

2928978 is a wasteful number, since it uses less digits than its factorization.

2928978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538 (or 12535 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 2928978 is about 1711.4257214381. The cubic root of 2928978 is about 143.0777284567.

The spelling of 2928978 in words is "two million, nine hundred twenty-eight thousand, nine hundred seventy-eight".