1002353940 has 240 divisors, whose sum is σ = 3622937472. Its totient is φ = 227245824.

The previous prime is 1002353929. The next prime is 1002353959. The reversal of 1002353940 is 493532001.

1002353940 is a `hidden beast` number, since 100 + 23 + 539 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1780099 + ... + 1780661.

Almost surely, 2^1002353940 is an apocalyptic number.

1002353940 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 1002353940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811468736).

1002353940 is an abundant number, since it is smaller than the sum of its proper divisors (2620583532).

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

1002353940 is a wasteful number, since it uses less digits than its factorization.

1002353940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1002353940 is about 31659.9737839437. The cubic root of 1002353940 is about 1000.7840318002.

Adding to 1002353940 its reverse (493532001), we get a palindrome (1495885941).

The spelling of 1002353940 in words is "one billion, two million, three hundred fifty-three thousand, nine hundred forty".