2978430 has 64 divisors (see below), whose sum is σ = 8805888. Its totient is φ = 627840.

The previous prime is 2978429. The next prime is 2978453. The reversal of 2978430 is 348792.

2978430 = T₂₀₉ + T₂₁₀ + ... + T₂₉₉.

It is a nialpdrome in base 12.

It is a zygodrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 2978391 and 2978400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2185 + ... + 3275.

It is an arithmetic number, because the mean of its divisors is an integer number (137592).

2^2978430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2978430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4402944).

2978430 is an abundant number, since it is smaller than the sum of its proper divisors (5827458).

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

2978430 is a wasteful number, since it uses less digits than its factorization.

2978430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 2978430 is about 1725.8128519628. The cubic root of 2978430 is about 143.8784661289.

The spelling of 2978430 in words is "two million, nine hundred seventy-eight thousand, four hundred thirty".