1071572004 has 60 divisors (see below), whose sum is σ = 2843168944. Its totient is φ = 351852336.

The previous prime is 1071572003. The next prime is 1071572017. The reversal of 1071572004 is 4002751701.

It is a super-2 number, since 2×1071572004² = 2296533119513152032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1071572003) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2974 + ... + 46389.

Almost surely, 2^1071572004 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 1071572004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1421584472).

1071572004 is an abundant number, since it is smaller than the sum of its proper divisors (1771596940).

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

1071572004 is a wasteful number, since it uses less digits than its factorization.

1071572004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49446 (or 49435 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 1071572004 is about 32734.8744307963. The cubic root of 1071572004 is about 1023.3097676482.

The spelling of 1071572004 in words is "one billion, seventy-one million, five hundred seventy-two thousand, four".