1545502420 has 96 divisors (see below), whose sum is σ = 4070497536. Its totient is φ = 478848000.

The previous prime is 1545502417. The next prime is 1545502429. The reversal of 1545502420 is 242055451.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1545502429) 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, 263520 + ... + 269320.

It is an arithmetic number, because the mean of its divisors is an integer number (42401016).

Almost surely, 2^1545502420 is an apocalyptic number.

1545502420 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 1545502420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035248768).

1545502420 is an abundant number, since it is smaller than the sum of its proper divisors (2524995116).

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

1545502420 is a wasteful number, since it uses less digits than its factorization.

1545502420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001 (or 5999 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 28.

The square root of 1545502420 is about 39312.8785514366. The cubic root of 1545502420 is about 1156.1740826902.

Adding to 1545502420 its reverse (242055451), we get a palindrome (1787557871).

The spelling of 1545502420 in words is "one billion, five hundred forty-five million, five hundred two thousand, four hundred twenty".