1400028900 has 72 divisors (see below), whose sum is σ = 4056240384. Its totient is φ = 372835200.

The previous prime is 1400028841. The next prime is 1400028943. The reversal of 1400028900 is 98200041.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253165 + ... + 258635.

It is an arithmetic number, because the mean of its divisors is an integer number (56336672).

Almost surely, 2^1400028900 is an apocalyptic number.

1400028900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400028900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2028120192).

1400028900 is an abundant number, since it is smaller than the sum of its proper divisors (2656211484).

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

1400028900 is a wasteful number, since it uses less digits than its factorization.

1400028900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6341 (or 6334 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1400028900 is about 37416.9600582410. The cubic root of 1400028900 is about 1118.6966396738.

Adding to 1400028900 its reverse (98200041), we get a palindrome (1498228941).

The spelling of 1400028900 in words is "one billion, four hundred million, twenty-eight thousand, nine hundred".