921148000 has 96 divisors (see below), whose sum is σ = 2272783968. Its totient is φ = 366912000.

The previous prime is 921147923. The next prime is 921148013. The reversal of 921148000 is 841129.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 1683727 + ... + 1684273.

It is an arithmetic number, because the mean of its divisors is an integer number (23674833).

Almost surely, 2^921148000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 921148000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1136391984).

921148000 is an abundant number, since it is smaller than the sum of its proper divisors (1351635968).

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

921148000 is a wasteful number, since it uses less digits than its factorization.

921148000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 993 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 921148000 is about 30350.4200959394. The cubic root of 921148000 is about 972.9931986397.

Adding to 921148000 its reverse (841129), we get a palindrome (921989129).

The spelling of 921148000 in words is "nine hundred twenty-one million, one hundred forty-eight thousand".