8401208920 has 64 divisors (see below), whose sum is σ = 21554255520. Its totient is φ = 2919512064.

The previous prime is 8401208857. The next prime is 8401208951. The reversal of 8401208920 is 298021048.

It is a super-2 number, since 2×8401208920² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

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, 466342 + ... + 484021.

Almost surely, 2^8401208920 is an apocalyptic number.

It is an amenable number.

8401208920 is an abundant number, since it is smaller than the sum of its proper divisors (13153046600).

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

8401208920 is a wasteful number, since it uses less digits than its factorization.

8401208920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950404 (or 950400 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 8401208920 is about 91658.1088611368. The cubic root of 8401208920 is about 2032.8902281489.

Adding to 8401208920 its reverse (298021048), we get a palindrome (8699229968).

The spelling of 8401208920 in words is "eight billion, four hundred one million, two hundred eight thousand, nine hundred twenty".