1002306840 has 64 divisors (see below), whose sum is σ = 3026129760. Its totient is φ = 265574400.

The previous prime is 1002306839. The next prime is 1002306853. The reversal of 1002306840 is 486032001.

It is a happy number.

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 1002306840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7761 + ... + 45440.

Almost surely, 2^1002306840 is an apocalyptic number.

1002306840 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 1002306840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1513064880).

1002306840 is an abundant number, since it is smaller than the sum of its proper divisors (2023822920).

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

1002306840 is a wasteful number, since it uses less digits than its factorization.

1002306840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53372 (or 53368 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1002306840 is about 31659.2299337808. The cubic root of 1002306840 is about 1000.7683561443.

Adding to 1002306840 its reverse (486032001), we get a palindrome (1488338841).

The spelling of 1002306840 in words is "one billion, two million, three hundred six thousand, eight hundred forty".