213737148 has 18 divisors (see below), whose sum is σ = 540280104. Its totient is φ = 71245704.

The previous prime is 213737143. The next prime is 213737171. The reversal of 213737148 is 841737312.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5937143 = 213737148 / (2 + 1 + 3 + 7 + 3 + 7 + 1 + 4 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213737143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2968536 + ... + 2968607.

Almost surely, 2^213737148 is an apocalyptic number.

It is an amenable number.

213737148 is an abundant number, since it is smaller than the sum of its proper divisors (326542956).

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

213737148 is a wasteful number, since it uses less digits than its factorization.

213737148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937153 (or 5937148 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 213737148 is about 14619.7519814804. The cubic root of 213737148 is about 597.8974071120.

The spelling of 213737148 in words is "two hundred thirteen million, seven hundred thirty-seven thousand, one hundred forty-eight".