2278630 has 16 divisors (see below), whose sum is σ = 4126464. Its totient is φ = 905920.

The previous prime is 2278553. The next prime is 2278631. The reversal of 2278630 is 368722.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1314 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (257904).

2^2278630 is an apocalyptic number.

2278630 is the 955-th heptagonal number.

2278630 is a deficient number, since it is larger than the sum of its proper divisors (1847834).

2278630 is a wasteful number, since it uses less digits than its factorization.

2278630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 2278630 is about 1509.5131665540. The cubic root of 2278630 is about 131.5905201611.

The spelling of 2278630 in words is "two million, two hundred seventy-eight thousand, six hundred thirty".