215542030 has 16 divisors (see below), whose sum is σ = 423246384. Its totient is φ = 78378880.

The previous prime is 215542027. The next prime is 215542049. The reversal of 215542030 is 30245512.

215542030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 215541992 and 215542010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 979627 + ... + 979846.

It is an arithmetic number, because the mean of its divisors is an integer number (26452899).

Almost surely, 2^215542030 is an apocalyptic number.

215542030 is a deficient number, since it is larger than the sum of its proper divisors (207704354).

215542030 is a wasteful number, since it uses less digits than its factorization.

215542030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1959491.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 215542030 is about 14681.3497335906. The cubic root of 215542030 is about 599.5756536581.

Adding to 215542030 its reverse (30245512), we get a palindrome (245787542).

It can be divided in two parts, 215 and 542030, that added together give a palindrome (542245).

The spelling of 215542030 in words is "two hundred fifteen million, five hundred forty-two thousand, thirty".