2978955 has 48 divisors (see below), whose sum is σ = 6052800. Its totient is φ = 1354752.

The previous prime is 2978933. The next prime is 2978959. The reversal of 2978955 is 5598792.

It is a happy number.

It is not a de Polignac number, because 2978955 - 2⁵ = 2978923 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (226800) is a multiple of the sum of its prime factors (225).

It is a self number, because there is not a number n which added to its sum of digits gives 2978955.

It is not an unprimeable number, because it can be changed into a prime (2978959) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15339 + ... + 15531.

It is an arithmetic number, because the mean of its divisors is an integer number (126100).

2^2978955 is an apocalyptic number.

2978955 is an abundant number, since it is smaller than the sum of its proper divisors (3073845).

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

2978955 is a wasteful number, since it uses less digits than its factorization.

2978955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 208 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 2978955 is about 1725.9649475004. The cubic root of 2978955 is about 143.8869193248.

The spelling of 2978955 in words is "two million, nine hundred seventy-eight thousand, nine hundred fifty-five".