1403630120 has 32 divisors (see below), whose sum is σ = 3165500520. Its totient is φ = 560148480.

The previous prime is 1403630117. The next prime is 1403630147. The reversal of 1403630120 is 210363041.

It can be written as a sum of positive squares in 4 ways, for example, as 866595844 + 537034276 = 29438^2 + 23174^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1403630092 and 1403630101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23201 + ... + 57840.

Almost surely, 2^1403630120 is an apocalyptic number.

1403630120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1403630120 is an abundant number, since it is smaller than the sum of its proper divisors (1761870400).

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

1403630120 is a wasteful number, since it uses less digits than its factorization.

1403630120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81485 (or 81481 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1403630120 is about 37465.0519818137. The cubic root of 1403630120 is about 1119.6550064126.

Adding to 1403630120 its reverse (210363041), we get a palindrome (1613993161).

The spelling of 1403630120 in words is "one billion, four hundred three million, six hundred thirty thousand, one hundred twenty".