1429638 has 16 divisors (see below), whose sum is σ = 3267840. Its totient is φ = 408456.

The previous prime is 1429633. The next prime is 1429651. The reversal of 1429638 is 8369241.

It is a super-2 number, since 2×1429638² = 4087729622088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1429599 and 1429608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1429633) 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, 16978 + ... + 17061.

It is an arithmetic number, because the mean of its divisors is an integer number (204240).

2^1429638 is an apocalyptic number.

1429638 is an abundant number, since it is smaller than the sum of its proper divisors (1838202).

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

1429638 is a wasteful number, since it uses less digits than its factorization.

1429638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34051.

The product of its digits is 10368, while the sum is 33.

The square root of 1429638 is about 1195.6747049261. The cubic root of 1429638 is about 112.6528096275.

The spelling of 1429638 in words is "one million, four hundred twenty-nine thousand, six hundred thirty-eight".