1823700720 has 40 divisors (see below), whose sum is σ = 5653472976. Its totient is φ = 486320128.

The previous prime is 1823700707. The next prime is 1823700727. The reversal of 1823700720 is 270073281.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×1823700720² = 6651768632257036800, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1823700727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3799137 + ... + 3799616.

Almost surely, 2^1823700720 is an apocalyptic number.

1823700720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1823700720 is an abundant number, since it is smaller than the sum of its proper divisors (3829772256).

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

1823700720 is a wasteful number, since it uses less digits than its factorization.

1823700720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7598769 (or 7598763 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 1823700720 is about 42704.8090968687. The cubic root of 1823700720 is about 1221.7561200616.

The spelling of 1823700720 in words is "one billion, eight hundred twenty-three million, seven hundred thousand, seven hundred twenty".