1045274880 has 144 divisors (see below), whose sum is σ = 3595314240. Its totient is φ = 257286144.

The previous prime is 1045274861. The next prime is 1045274887. The reversal of 1045274880 is 884725401.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1045274887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39451 + ... + 60389.

It is an arithmetic number, because the mean of its divisors is an integer number (24967460).

Almost surely, 2^1045274880 is an apocalyptic number.

1045274880 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 1045274880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797657120).

1045274880 is an abundant number, since it is smaller than the sum of its proper divisors (2550039360).

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

1045274880 is a wasteful number, since it uses less digits than its factorization.

1045274880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20976 (or 20962 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 1045274880 is about 32330.7110964173. The cubic root of 1045274880 is about 1014.8694308169.

The spelling of 1045274880 in words is "one billion, forty-five million, two hundred seventy-four thousand, eight hundred eighty".