145064220 has 96 divisors (see below), whose sum is σ = 484420608. Its totient is φ = 31713792.

The previous prime is 145064219. The next prime is 145064237. The reversal of 145064220 is 22460541.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2152 + ... + 17168.

It is an arithmetic number, because the mean of its divisors is an integer number (5046048).

Almost surely, 2^145064220 is an apocalyptic number.

145064220 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 145064220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (242210304).

145064220 is an abundant number, since it is smaller than the sum of its proper divisors (339356388).

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

145064220 is a wasteful number, since it uses less digits than its factorization.

145064220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15059 (or 15057 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 145064220 is about 12044.2608739598. The cubic root of 145064220 is about 525.4363356669.

The spelling of 145064220 in words is "one hundred forty-five million, sixty-four thousand, two hundred twenty".