1071684432 has 360 divisors, whose sum is σ = 3865627584. Its totient is φ = 281428992.

The previous prime is 1071684389. The next prime is 1071684557. The reversal of 1071684432 is 2344861701.

It is a super-2 number, since 2×1071684432² = 2297015043582325248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4599388 + ... + 4599620.

Almost surely, 2^1071684432 is an apocalyptic number.

1071684432 is a gapful number since it is divisible by the number (12) 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 1071684432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1932813792).

1071684432 is an abundant number, since it is smaller than the sum of its proper divisors (2793943152).

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

1071684432 is a wasteful number, since it uses less digits than its factorization.

1071684432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1071684432 is about 32736.5916368824. The cubic root of 1071684432 is about 1023.3455545254.

The spelling of 1071684432 in words is "one billion, seventy-one million, six hundred eighty-four thousand, four hundred thirty-two".