1402637028 has 48 divisors (see below), whose sum is σ = 3534698496. Its totient is φ = 430341120.

The previous prime is 1402637023. The next prime is 1402637039. The reversal of 1402637028 is 8207362041.

It is a self number, because there is not a number n which added to its sum of digits gives 1402637028.

It is not an unprimeable number, because it can be changed into a prime (1402637023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42333 + ... + 67803.

It is an arithmetic number, because the mean of its divisors is an integer number (73639552).

Almost surely, 2^1402637028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1402637028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1767349248).

1402637028 is an abundant number, since it is smaller than the sum of its proper divisors (2132061468).

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

1402637028 is a wasteful number, since it uses less digits than its factorization.

1402637028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25844 (or 25842 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1402637028 is about 37451.7960584002. The cubic root of 1402637028 is about 1119.3908858415.

Adding to 1402637028 its reverse (8207362041), we get a palindrome (9609999069).

The spelling of 1402637028 in words is "one billion, four hundred two million, six hundred thirty-seven thousand, twenty-eight".