1630402 has 16 divisors (see below), whose sum is σ = 2626560. Its totient is φ = 756288.

The previous prime is 1630399. The next prime is 1630403. The reversal of 1630402 is 2040361.

It is not an unprimeable number, because it can be changed into a prime (1630403) 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, 2383 + ... + 2989.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

2^1630402 is an apocalyptic number.

1630402 is a deficient number, since it is larger than the sum of its proper divisors (996158).

1630402 is a wasteful number, since it uses less digits than its factorization.

1630402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1630402 is about 1276.8719591251. The cubic root of 1630402 is about 117.6968662927.

Adding to 1630402 its reverse (2040361), we get a palindrome (3670763).

The spelling of 1630402 in words is "one million, six hundred thirty thousand, four hundred two".