1572405120 has 768 divisors, whose sum is σ = 6736504320. Its totient is φ = 332513280.

The previous prime is 1572405053. The next prime is 1572405137. The reversal of 1572405120 is 215042751.

1572405120 is a `hidden beast` number, since 1 + 572 + 40 + 51 + 2 + 0 = 666.

It is a super-2 number, since 2×1572405120² = 4944915722804428800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 18944599 + ... + 18944681.

It is an arithmetic number, because the mean of its divisors is an integer number (8771490).

Almost surely, 2^1572405120 is an apocalyptic number.

1572405120 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 1572405120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3368252160).

1572405120 is an abundant number, since it is smaller than the sum of its proper divisors (5164099200).

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

1572405120 is a wasteful number, since it uses less digits than its factorization.

1572405120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 140 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 1572405120 is about 39653.5637742688. The cubic root of 1572405120 is about 1162.8440715836.

Adding to 1572405120 its reverse (215042751), we get a palindrome (1787447871).

The spelling of 1572405120 in words is "one billion, five hundred seventy-two million, four hundred five thousand, one hundred twenty".