1015430640 has 160 divisors (see below), whose sum is σ = 3648623616. Its totient is φ = 228802560.

The previous prime is 1015430617. The next prime is 1015430653. The reversal of 1015430640 is 460345101.

It is a super-3 number, since 3×1015430640³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1015430640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115024 + ... + 123536.

Almost surely, 2^1015430640 is an apocalyptic number.

1015430640 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 1015430640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1824311808).

1015430640 is an abundant number, since it is smaller than the sum of its proper divisors (2633192976).

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

1015430640 is a wasteful number, since it uses less digits than its factorization.

1015430640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8607 (or 8601 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1015430640 is about 31865.8224434895. The cubic root of 1015430640 is about 1005.1173150841.

Adding to 1015430640 its reverse (460345101), we get a palindrome (1475775741).

The spelling of 1015430640 in words is "one billion, fifteen million, four hundred thirty thousand, six hundred forty".