60215540 has 96 divisors (see below), whose sum is σ = 160489728. Its totient is φ = 18432000.

The previous prime is 60215527. The next prime is 60215549. The reversal of 60215540 is 4551206.

It is a super-2 number, since 2×60215540² = 7251822514983200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60215549) 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, 93620 + ... + 94260.

It is an arithmetic number, because the mean of its divisors is an integer number (1671768).

Almost surely, 2^60215540 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 60215540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80244864).

60215540 is an abundant number, since it is smaller than the sum of its proper divisors (100274188).

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

60215540 is a wasteful number, since it uses less digits than its factorization.

60215540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 60215540 is about 7759.8672669061. The cubic root of 60215540 is about 391.9549875429.

Adding to 60215540 its reverse (4551206), we get a palindrome (64766746).

The spelling of 60215540 in words is "sixty million, two hundred fifteen thousand, five hundred forty".