1061332440 has 128 divisors (see below), whose sum is σ = 3852956160. Its totient is φ = 228317184.

The previous prime is 1061332421. The next prime is 1061332451. The reversal of 1061332440 is 442331601.

It is a super-2 number, since 2×1061332440² = 2252853096392707200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1061332440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22882 + ... + 51441.

It is an arithmetic number, because the mean of its divisors is an integer number (30101220).

Almost surely, 2^1061332440 is an apocalyptic number.

1061332440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1061332440 is an abundant number, since it is smaller than the sum of its proper divisors (2791623720).

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

1061332440 is a wasteful number, since it uses less digits than its factorization.

1061332440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74361 (or 74357 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1061332440 is about 32578.0975503481. The cubic root of 1061332440 is about 1020.0398677228.

The spelling of 1061332440 in words is "one billion, sixty-one million, three hundred thirty-two thousand, four hundred forty".