387229770 has 24 divisors (see below), whose sum is σ = 1006797636. Its totient is φ = 103261248.

The previous prime is 387229763. The next prime is 387229807. The reversal of 387229770 is 77922783.

It can be written as a sum of positive squares in 2 ways, for example, as 383415561 + 3814209 = 19581^2 + 1953^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2151187 + ... + 2151366.

Almost surely, 2^387229770 is an apocalyptic number.

387229770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

387229770 is an abundant number, since it is smaller than the sum of its proper divisors (619567866).

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

387229770 is a wasteful number, since it uses less digits than its factorization.

387229770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302566 (or 4302563 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 45.

The square root of 387229770 is about 19678.1546390915. The cubic root of 387229770 is about 728.8803565499.

The spelling of 387229770 in words is "three hundred eighty-seven million, two hundred twenty-nine thousand, seven hundred seventy".