1400028250 has 16 divisors (see below), whose sum is σ = 2620853352. Its totient is φ = 560011200.

The previous prime is 1400028241. The next prime is 1400028341. The reversal of 1400028250 is 528200041.

It can be written as a sum of positive squares in 4 ways, for example, as 802079041 + 597949209 = 28321^2 + 24453^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2799807 + ... + 2800306.

Almost surely, 2^1400028250 is an apocalyptic number.

1400028250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1400028250 is a deficient number, since it is larger than the sum of its proper divisors (1220825102).

1400028250 is an equidigital number, since it uses as much as digits as its factorization.

1400028250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5600130 (or 5600120 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1400028250 is about 37416.9513723392. The cubic root of 1400028250 is about 1118.6964665457.

Adding to 1400028250 its reverse (528200041), we get a palindrome (1928228291).

The spelling of 1400028250 in words is "one billion, four hundred million, twenty-eight thousand, two hundred fifty".