1040249028 has 96 divisors (see below), whose sum is σ = 3048505600. Its totient is φ = 274337280.

The previous prime is 1040249027. The next prime is 1040249029. The reversal of 1040249028 is 8209420401.

It is an interprime number because it is at equal distance from previous prime (1040249027) and next prime (1040249029).

It is a junction number, because it is equal to n+sod(n) for n = 1040248986 and 1040249004.

It is not an unprimeable number, because it can be changed into a prime (1040249027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43788 + ... + 63228.

Almost surely, 2^1040249028 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 1040249028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1524252800).

1040249028 is an abundant number, since it is smaller than the sum of its proper divisors (2008256572).

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

1040249028 is a wasteful number, since it uses less digits than its factorization.

1040249028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19482 (or 19466 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 1040249028 is about 32252.8917773275. The cubic root of 1040249028 is about 1013.2402643729.

Adding to 1040249028 its reverse (8209420401), we get a palindrome (9249669429).

The spelling of 1040249028 in words is "one billion, forty million, two hundred forty-nine thousand, twenty-eight".