143691072 has 224 divisors, whose sum is σ = 485729280. Its totient is φ = 36495360.

The previous prime is 143691061. The next prime is 143691073. The reversal of 143691072 is 270196341.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143691073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 433947 + ... + 434277.

Almost surely, 2^143691072 is an apocalyptic number.

143691072 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 143691072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242864640).

143691072 is an abundant number, since it is smaller than the sum of its proper divisors (342038208).

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

143691072 is a wasteful number, since it uses less digits than its factorization.

143691072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 143691072 is about 11987.1210889020. The cubic root of 143691072 is about 523.7731862228.

The spelling of 143691072 in words is "one hundred forty-three million, six hundred ninety-one thousand, seventy-two".