803090640 has 160 divisors (see below), whose sum is σ = 2742253056. Its totient is φ = 192801280.

The previous prime is 803090627. The next prime is 803090641. The reversal of 803090640 is 46090308.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 803090598 and 803090607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803090641) 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, 281059 + ... + 283901.

Almost surely, 2^803090640 is an apocalyptic number.

803090640 is a gapful number since it is divisible by the number (80) 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 803090640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1371126528).

803090640 is an abundant number, since it is smaller than the sum of its proper divisors (1939162416).

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

803090640 is a wasteful number, since it uses less digits than its factorization.

803090640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977 (or 2971 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 803090640 is about 28338.8538935505. The cubic root of 803090640 is about 929.5116872250.

The spelling of 803090640 in words is "eight hundred three million, ninety thousand, six hundred forty".