1620940248 has 112 divisors (see below), whose sum is σ = 4668640200. Its totient is φ = 527057280.

The previous prime is 1620940247. The next prime is 1620940271. The reversal of 1620940248 is 8420490261.

1620940248 is a `hidden beast` number, since 1 + 6 + 209 + 402 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620940241) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 235723 + ... + 242501.

Almost surely, 2^1620940248 is an apocalyptic number.

1620940248 is a gapful number since it is divisible by the number (18) 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 1620940248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2334320100).

1620940248 is an abundant number, since it is smaller than the sum of its proper divisors (3047699952).

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

1620940248 is an equidigital number, since it uses as much as digits as its factorization.

1620940248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844 (or 6825 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 1620940248 is about 40260.9022253600. The cubic root of 1620940248 is about 1174.6874673234.

The spelling of 1620940248 in words is "one billion, six hundred twenty million, nine hundred forty thousand, two hundred forty-eight".