1505868672 has 128 divisors (see below), whose sum is σ = 4987065600. Its totient is φ = 391127040.

The previous prime is 1505868671. The next prime is 1505868677. The reversal of 1505868672 is 2768685051.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×1505868672² = 4535280914622087168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1505868671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4104 + ... + 55032.

It is an arithmetic number, because the mean of its divisors is an integer number (38961450).

Almost surely, 2^1505868672 is an apocalyptic number.

1505868672 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 1505868672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2493532800).

1505868672 is an abundant number, since it is smaller than the sum of its proper divisors (3481196928).

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

1505868672 is a wasteful number, since it uses less digits than its factorization.

1505868672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50964 (or 50952 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The square root of 1505868672 is about 38805.5237305206. The cubic root of 1505868672 is about 1146.2051781542.

The spelling of 1505868672 in words is "one billion, five hundred five million, eight hundred sixty-eight thousand, six hundred seventy-two".