721770150 has 48 divisors (see below), whose sum is σ = 1833663888. Its totient is φ = 187776000.

The previous prime is 721770143. The next prime is 721770151. The reversal of 721770150 is 51077127.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721770151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52531 + ... + 64830.

It is an arithmetic number, because the mean of its divisors is an integer number (38201331).

Almost surely, 2^721770150 is an apocalyptic number.

721770150 is an abundant number, since it is smaller than the sum of its proper divisors (1111893738).

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

721770150 is a wasteful number, since it uses less digits than its factorization.

721770150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117417 (or 117412 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 721770150 is about 26865.7802790092. The cubic root of 721770150 is about 897.0148628736.

The spelling of 721770150 in words is "seven hundred twenty-one million, seven hundred seventy thousand, one hundred fifty".