1234897920 has 176 divisors, whose sum is σ = 4389095520. Its totient is φ = 329269248.

The previous prime is 1234897891. The next prime is 1234897973. The reversal of 1234897920 is 297984321.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 133774 + ... + 142706.

Almost surely, 2^1234897920 is an apocalyptic number.

1234897920 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 1234897920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2194547760).

1234897920 is an abundant number, since it is smaller than the sum of its proper divisors (3154197600).

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

1234897920 is an equidigital number, since it uses as much as digits as its factorization.

1234897920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8967 (or 8943 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 1234897920 is about 35141.1143818747. The cubic root of 1234897920 is about 1072.8615632634.

The spelling of 1234897920 in words is "one billion, two hundred thirty-four million, eight hundred ninety-seven thousand, nine hundred twenty".